Alternate Realm Boon

That Time I Got Reincarnated as a Slime - Official SimulDub Clip - Powers!-1

He not a bad slime... most of the time.

Protagonists in Portal Fantasy, also known today as Isekai, gain an advantage compared to the other world's inhabitants. This attribute plays an important role as they journey through this new world. The following are common examples:

•  A special skill or class in a world works much like an RPG.
•  The use of magic in a new method thanks to modern-day knowledge. The protagonist would use some grasp of science, math, physics, etc. can be combined with the fantastic art. They may even take as far as creating Magitek or Post-Modern Magik that outperforms the current technology in the setting.
•  A person summoned as the Chosen One who can wield a legendary weapon or artifact.
•  They reincarnate into another form, such as a monster or some other form of non-human creature.
  •  There is also a subset called transmigration, where the protagonist's soul transfers to a different body in another world. The new body would have some power(s).
•  A simple example is a superpower where one is granted once in this new world or has one before entering the other world.
• Being assigned or assisted by a supernatural entity that can dispense boons to the character, including, but not limited to, any of the above.
• They gain access to an exclusive system that acts like a video game that grants different functions.

It varies from each setting; an example would be how the world would have an empowering effect on the visitor. Another example would come from a deity altering them for their purposes, a blessing, or both. Regardless of how it happens, the main character would stand out compared to the locals.

The trope is more common in Eastern works than Western ones.

Examples of Alternate Realm Boon include:

Anime and Manga

• Enforced and downplayed in Arifureta, where the god, Ehit, transported a group of students with their homeroom teacher to the world of Tortus and blessed with combat Jobs, Skills, and Magic except for one. The bullied main protagonist, Hajime, gets stuck with the rare but non-combat Job, Synergist, with the Skill, "Transmute" and no other Magic or Skills.
• The Rising of the Shield Hero has four people from different worlds summoned to a kingdom named Melomarc in a fantasy world filled with monsters and other races besides humans. The four equips one of the Four Legendary Weapons: a sword, a spear, a bow, and a shield. These weapons grant their users different abilities while also having various forms unlocked through conditions and what materials the weaponry can absorb.
• In Re: Monster, Tomokui Kanata was an assassin with an Esper ability called Absorption (it allows him to eat anything from living creatures to inorganic material no matter how hard or toxic and gain skills), who dies during a mission and reincarnates into a goblin named Rou while keeping his memories and Absorption.
• Wise Man's Grandson‍ '‍s main character was a salaryman who gets hit by a truck. He reincarnates into a fantasy world as Shin Wolford. Shin is an orphaned newborn who survived a Demon Beast's attack, is found and adopted by the Wise Man, Merlin. Shin later recalls vague memories of his modern-day life while also being taught advanced magic. He combines magic with knowledge of modern science to explosive effects figuratively and literally.
• Knight's and Magic 's protagonist, Ernesti Kurata, was a genius programmer and mecha otaku while alive on Earth. He reincarnates as a boy noble into a world where both magic and magical mecha called Silhouette Knights exist. He realizes that magic is like computer programming, so he applies his skill by reprogramming his own internal Magic Circuit to use high-level magic.
• Parodied in KonoSuba, A shut-in NEET, Kazuma Sato, dies from shock after mistaking a tractor for a truck while trying to save a girl. The goddess, Aqua, offers him reincarnate him to an RPGesque world where the Demon Lord spreads chaos. She also gives Kazuma the choice of a 'cheat item.' In a fit of rage, Kazuma chooses Aqua, who has spent the whole time mocking him, as his bonus. Another goddess recognizes it as official; then, the two teleports them to this new world.
• In Konjiki no Word Master, five teenagers summoned to another world, but only four are summoned as heroes. Each hero has unique magic and powers. At the same time, the fifth is the main character, Hiiro Okamura, who is titled "Innocent Bystander" but can use Word Magic, which allows him to draw Kanji and apply the meaning as an effect.
• In World Strongest Rearguard, Arihito Atobe, a businessman, dies in a bus accident. He is reborn as a Seeker in a world called Labyrinth Country. After getting his Seeker's License, he chooses the Rearguard job, which gives him the ability to support his party through supportive and defensive skills.
• ''Death March to the Parallel World Rhapsody''has Suzuki Ichiro, a 30-year-old programmer who died from exhaustion and ended up reincarnated into another world in a younger body. After calling a game window in front of him, he realizes that his name is 'Satou' also, the three use, "Meteor Shower", then gets attacked by an army of lizardmen. He uses up all of his Meteor Shower against the battalion and levels him up to 310 while gaining many drop items.

• So I'm a Spider, So What? starts with an entire classroom mysteriously die from a magical phenomenon but then are reincarnated, including the main girl, into another world. She is reborn as a nameless spider monster while preserving her past life memories. Eventually, a revelation that people reincarnate into the other world gets the skill "n%I=W."
  • n%I=W transfers their earlier life's fortes, memories, and soul. Without it, the person would be an average being with no powers or unable to interact with the System in the other world. It can translate System notifications into Japanese while also giving a small bonus to how fast skills are acquired and stats increases. It also recovers the person's HP, MP, and SP when they level up.
• Deconstructed in Re:Zero − Starting Life in Another World, where the protagonist, Subaru Natsuki, gains an ability he calls Return By Death after being transported to a fantasy world. He can return to a previous time after dying while carrying limitations besides that, he's just an average human.
• That Time I Got Reincarnated as A Slime: The middle-aged protagonist, Satoru Minami, gets killed by defending his subordinate from being stabbed. He reincarnates into another world as a slime. Due to how he died a virgin, he gained the Unique Skills of Great Sage along with Predator, and other skills.
  • There is a term for people who come from other worlds known as Otherworlds, much like Satoru. Otherworlders tend to have at least one Unique Skill based on their mental state, and those with weaker minds would gain none. There are three types which are Strays, Reincarnated, and Summoned:
    • Strays are Otherworlders that come to the world by coincidence.
    • Reincarnated are people who have died and reborn into the other world as natural inhabitants.
    • Summoned are those who are transported to the world by a magic ritual.
• The story of In Another World with My Smartphone has Touya Mochizuki, a teenage boy who is accidentally killed by God and reincarnates into another world. He is granted a body with superhuman abilities and affinities to all seven magical elements along with his smartphone that can use the internet from Earth.
• Overlord (Anime) begins with the middle-aged salaryman, Suzuki Satoru, being transported to the New World while still logged on the last seconds of the MMO Yggdrasil. He is now Momonga, a max-leveled Overlord character with high-class equipment, a plethora of spells, Momonga, and the guild headquarters with all the loyal NPC subordinates.
• Isekai Cheat Magician 's two protagonists, Taichi and Rin, a teenage boy and girl who are summoned to the new world and gain magical powers. Taichi has an immense amount of magic, which he can use for superhuman physical abilities. Rin also has a mammoth reservoir of magic while also showing affinities for earth, wind, fire, and water magic. She shows lower capability than Taichi but uses her knowledge of physics to enhance her magic.
• Reincarnated as a Sword 's main character is a 30-year old salaryman killed by a driver who was texting while driving. The man reincarnates into a living sword named Master in an RPG fantasy world. He can gain new skills and improved stats by slicing monsters' magic crystals, while those who wield Master gain his stats and Skills.
• Fushigi Yūgi: Every girl summoned into the world inside the book The Universe of the Four Gods is given three wishes — but they are required to beSelfless Wishes.
• Played With in Saga of Tanya the Evil: an HR manager dies and encounters a god-like being he dubs as Being X. Due to the protagonist's staunch atheism, Being X reincarnates the manager into another world going through a world war as a girl with a high magic aptitude named Tanya in the country of the Empire. This country is surrounded by hostile neighbors and sorcery involved in warfare, which Tanya first fights as a Warrant Officer.
• Shin defeated the last boss of a VRMMO, The New Gate, a game that trapped people where they die in reality if they die in the MMO. Before he could log out, he is forced through the gate behind the boss and finds himself in an actual fantasy world similar to the game. Shin then learns the titles he gained after beating the game that gives him various overpowered bonuses.
• The Ends from Drifters are historical figures from various points in Earth's history brought to the fantasy world. These people suffered trauma from events in their lives and have become mentally warped, and have unique supernatural abilities related to their past.
• Tagami Yuseki, from World Customize Creator, is summoned to another world by the Evil God and granted a Divine Art. Divine Arts are superpowers a person received from a god. The power he receives allows him to customize any objects' attributes to giving mystical powers to them.
• ''The Familiar of Zero'' has the male protagonist, Saito, being summoned into another world as a familiar female mage, Louise. He gains the magical ability to use any weapon with great skill, from a simple broadsword to a fighter aircraft.
•  In Magic Knight Rayearth, three girls are summoned to the magic land of Cephiro. They each get magical armor and have their magic unlocked by Master Mage Clef.
• Reincarnated as a Dragon Egg 's the main protagonist reincarnated as a barely unhatched dragon egg with exclusive skills that help him survive this RPG-like world.
• Parodied in Didn't I Say to Make My Abilities Average in the Next Life?!: the main character, Misato Kurihara, was a girl prodigy who gets killed when she saved a girl from a truck. Her spirit meets with a deity who gives her a chance to reincarnate into a fantasy world with any power she desires, and that is to have average abilities. She reincarnates into a girl noble named Meine, who is 6,800 times physically and magically stronger than the average human due to the god's accounting an average of all living creatures in the world.
• How NOT to Summon a Demon Lord 's Takuma Sakamoto, MMO of Cross Reverie's top player, is transported into another world by two girls and turned into his in-game level 150 character high-level skills and equipment, Diablo. Takuma was supposed to become their slave, but the slavery part reflects onto them due to his ring reflecting magic
• From Tsukimichi, Misumi Makoto is summoned to another world by Tsukiyomi, the Moon Kami, because of his parents' contract for living on Earth. The Moon Kami grants him powers, and the goddess of this other world gives him the ability to understand the language. There is also how the lighter gravity of the different world makes him faster and stronger than the inhabitants.
• In the manhwa, Dorothy of Oz, Mara Shin came to Oz when she was a child and came home with a glove with a Z in an O emblem on it. After a few years, she returns to Oz as a teen with her dog, Toto. The glove is the magic staff, Thyrsos, which is the same weapon used by the Wizard of Oz. Mara also obtains magic boots from the Witch of the East that transforms her outfit to resemble a witch and gives her magic powers.
• Monster Tamer has an entire class of high school students somehow transported to another world with their own 'cheat abilities.' except for Takahiro. He didn't seem to have one until meeting a slime revealed that his ability is taming monsters.
• Tang San was an assassin trained under the Tang Sect and commits suicide after learning sect secrets. He reincarnates into a blacksmith's son into a world called Soul Land, where he is a Spirit Master that carries two Spirits instead of one. He also has the knowledge and training as an assassin along with cultivating Soul Power.
• All three students and their teacher transports to the land of El-Hazard inEl-Hazard: The Magnificent World gain a unique ability. The spirited teacher, Mr. Fujisawa, obtains superhuman strength in proportion to how little alcohol and nicotine he has ingested.  Katsuhiko Jinnai gains the ability to communicate with the Bugrom, a race of humanoid bugs. Nanami Jinnai can see through the illusions cast by the Phantom Tribe. Makoto Mizuhara can activate the Lost Technology of ancient El-Hazard with a touch.
• Isekai de Saikyou no Tsue ni Tensei shita Ore ga Iyagaru Shoujo wo Muriyari Mahou Shoujo ni P suru!: Niimi Neiji, a magical girl otaku, who dies by saving his colleague's daughter from a truck. A sorceress magically reincarnates him into a magic wand with the ability known as "Omnipotence." This ability allows him to use any magic, but he doesn't know how to use it.
• In Gacha Girl Corps, Heihachi Okura transports to a fantasy world with his smartphone installed with the Girls Corp app. It can summon items, food, and even girls to join his party, including a gacha to get more girls and equipment.
• Enforced and Played With In The Death Mage, where the unlucky main character, Hiroto Amamiya, and his classmates die after their ship capsizes. The god, Rodcorte, blesses every student with a new life in another world, along with extraordinary powers and luck, except Hiroto, due to the god mistaking him for another young man named Hiroto Amemiya. Rodcorte realizes his mistake and reincarnates Hiroto with higher mana and the exclusive ability to use Death Magic, but he still has terrible luck.
• Kiba: Zed lived in the mundane world of Calm but came under attack by a warrior with magic powers and escapes through a portal to the magical land of Templer. He learns that he has one of six Key Spirits, Amir Gaoul, the Key Spirit of Wind.
• The titular uncle from Isekai Ojisan, soon after being magically transported to another world and enchanted to understand, also speak the local language. This power allows him to learn how to use magic immediately.

Comic Books

• David Ellis Norman is a young man who builds a gateway to another world named Neverwhere. When he enters this realm, he becomes a hairless, muscular man that is well endowed and calls himself Den as that is all he remembers of his name. Den becomes an adventurer, fighting evil and bring peace to the land.

Film

• One anthology from Heavy Metal starts with David Ellis Norman finds a green rock for his collection. When it gets struck by lightning, Davis is transported to the world of Neverwhere. He is turned into a bald, musclebound, and well-endowed man and dubs himself Den. He goes on an adventure to defeat the immortal Ard and save Katherine Wells.

Literature

• In John Carter of Mars, the titular character travels to Mars by having his soul teleport through space and gains a new body. Due to the lower gravity, he gains superhuman agility and strength.
• Everworld where the teens can bring modern technology and knowledge to Everworld. These items give them advantages such as trading a recipe for gunpowder or using conventional weaponry. There is also another attribute that the teenagers have is that they don't go crazy, unlike most others who go to Everworld.
• In The Scum Villain Self-saving System, the protagonist, Shen Yuan, died while cursing the Proud Immortal Demon Way web novel. He blasted the online story because of its plot-holes and terrible ending. He is then transmigrated into Shen Quinquiu, the novel's antagonist, and acquired all of the latter's cultivation powers. He also has access to the titular system, where he can earn and use points to improve the story's plot.
• In the Chinese web novel Release That Witch! and its web manhua adaptation, the protagonist is a civil engineer that dies after overworking himself and becomes transmigrated into the body of Roland, a prince in a medieval fantasy world. Due to his prior knowledge, Roland brings innovation and upgrade the available technology by incorporating "Witches" (who are women prosecuted for their magical powers) into his plans.
•  In the Chinese Romance web novel, Transmigrator Meets Reincarnator; the heroine transmigrates into a character in the world of a book set in an ancient dynasty. She finds herself married to a man from an influential family wronged by the character she is now inhabiting. She was an entrepreneur and amateur chef that finds herself in a more primitive world. Her cooking and entrepreneurial skills win the people over with her delicious (modern) dishes, thus allowing her to create a profitable business. She also navigates her actions through knowledge of the novel to avoid any possible pitfalls.
• Reborn as a Vending Machine, I Now Wander the Dungeon has the main character is reincarnated into a living vending machine in a fantasy world, which he needs assistance being moved. He can give out items as long as he is inserted with money. There is also how he can use the profit from any products sold for upgrades from a broader selection to functions not included in ordinary vending machines.
• In The Sleeping Dragon, the first book of Joel Rosenberg's The Guardians of the Flame series, the story has a group of gamers playing a Dungeons & Dragons-like game. The gamemaster magically transports them into the world of the game's setting. The group become their characters' classes and have access to their skills by a game master who was more than he seemed.

Video Games

• In Fantastic Boyfriends: Legends of Midearth, a young man is summoned to another world through a phone app. He then learns that he is the legendary hero that is the only one that can wield the sword that is the only weapon that can defeat the Demon Lord.
• Tokyo Afternoon Summoners occurs in an alternate Tokyo where people from 23 different worlds are summoned due to an app called SUMMONS and are called Transients. Each Transient has a Role and a Sacred Artifact that gives a Rule to their respective wielder. A Rule is a power that correlates to the Role of a Transient. An example would be a person assigned the Role of Fighter, and their Rule is Infinity.
• In Magi-Nation, Tony falls through a chasm into another world called the Moonlands. He found a crystal that holds a horned bear-like creature named Furok, one of many diverse organisms called Dream Creatures. Tony is then found by a man named Orwin, who acts as a guardian for the region. Orwin trains Tony as a Magi due to summoning a Dream Creature through pure Animite, which was thought impossible.

Web Comics

• I am the Sorcerer King webtoon with the protagonist, Lee Sunghoon, who awakens to his past incarnation's memories and magic from being The Great Sorcerer, Kurataurus, who is from another world. This event happened when he was attacked by a monster and become one of the Awakened, which connects him to the Akasha system.
•  Averted in My Wife is the Demon Queen, where Xiang Ye, after buying a ring from a street vendor, demon sorcerors in another world summons him. He becomes the husband of the Demon Queen, Isabella Osa. Later on, a test reveals that Xiang Ye can't wield Boundary Force, which means he can't use magic or other techniques related to Boundary Force.
  • Subverted later, where he learns of the art of Forging. Forging uses magic stones embedded into a pen and brings to life any drawing made using it. Xiang Ye uses his talent with artistry while also utilizing his knowledge of technology and science to bring innovation to the craft.
•  In the webcomic, Goddess Creation System, the main character, Xiaxi, was a bullied female otaku who created a goddess-like MMO player character. She commits suicide due to being outed online for being ugly. Xiaxi then awakens in a fantasy world that resembles ancient China with the titular system. The system gives her missions of making powerful men fall in love with her through quests rewarding points. The system also offers her benefits like a dimension where she can exercise to lose weight, study subjects while sleeping, and get beauty products to enhance her appearance.
• Su Luxia, the main character of the web manhua, Cheating Men Must Die, is a shrewish woman from a futuristic world. She has the job of being a quick reincarnator. She takes over 'secondary female characters' in other worlds wronged at a point in their lives. While taking these women's place, she gets revenge on those who have wrong them while also fulfilling their last wishes. Su Luxia is assisted by a system that looks like a hamster that can give different items to help her fulfill her mission. These items range from damaging photos to magical slimming pills.

Western Animation

• In Dungeons and Dragons, a group of teenagers is gifted magic equipment and character classes by the Dungeon Master to survive in this fantasy realm.
• In Magi-Nation, Tony Jones transports to the Moonlands in hopes of summoning the Final Dreamer. He is teleported with a ring given by his grandfather, which contains the Animite for the Dream Creature, Furok.
• Averted in Amphibia, where three girls; Anne, Sasha, and Marcy transport to the titular land because of a magic music box. They are normal humans who don't gain anything special or bring much that helps them have many advantages.
• Averted in The Owl House, where a teenage girl named Luz finds a portal to the Demon Realm. Magic is abundant in this realm, but humans lack the sac of magic that Witches are born with to use this mystical art. Later subverted, when Luz uses her phone to reveal a glyph in a Spell Circle. By copying these glyphs, she can create a Spell Circle thus can use magic through this method.
• In Captain N: The Game Master, Kevin Keen is summoned from the real world to Videoland by the Ultimate Warp Zone. He is the legendary Game Master, Captian N, that serves as a warrior to defend the Videoland. He uses his knowledge of video games to help protect from any trouble caused in the land and a Power Pad with various powers and an NES Zapper.