Seito Kaichou Hikaru

There is a school where students learn how to hunt monsters. The three girls from the school's student council (Yuki Ayatsuji, Seira Kamui and Hikaru Izumi) finally defeat Barmus, one of the most powerful monsters around. But their battle doesn't end yet....

A new enemy revives Barmus and Kotone, their teacher, is kidnapped by him. Following it, the heroines are kidnapped one by one. Barmus' purpose is actually to make the girls give birth to monster babies... But logically, the girls will try to fight back.

Seito Kaichou Hikaru ~Inma ni Senryou Sareta Gakuen~ is a 2009 H-game created by catwalkNero that follows the Demon Slaying Student Council President Hikaru Izumi and her friends as they against the demon Barmus and his followers. The game was given an OVA anime adaptation in 2010 by Mary Jane which only lasted for 1 episode.

Seito Kaichou Hikaru has examples of:

• Absurdly Powerful Student Council: Somewhat justified, considering the student council are Superhero demon slayers that protects their school from supernatural threats.
• Adaptation Distillation: While the anime was clearly meant to be more than 1 episode, that one episode alone ended up cutting out a good chunk of the original story. Even if the anime did get more episodes, its safe to assume the story would be much more distilled than the original H-game.
• Amazon Brigade: All the members of the Demon Slaying student council are female.
• Babies Ever After: A dark variation in the original H-Game's Downer Ending after Barmus arranges for Hikaru and her friends to become pregnant with demon children.
• Baby Factory: Barmus's Evil Plan is to force Hikaru and the rest of the student council to bear the next generation of demon children. He ultimately succeeds in the H-games's Downer Ending.
• Barely-There Swimwear: One of the promotional images for the OVA feature Hikaru in a revealing sling-bikini.
• Big Bad: Barmus.
• Brainwashed and Crazy: Barmus ends up brainwashing most of the students that were present at school assemble during the second half of the anime OVA.
• Break the Badass: At the end of anime OVA, Barmus and his minions rape Hikaru non-stop for several hours before she end up being driven insane by the experience, with Hikaru giving a lustful ahegao face as she is impregnate by Barmus.
• Cool Big Sis: Hikaru to her younger brother, Shou (who was removed from the anime OVA).
• Dangerously-Short Skirt: Both Hikaru and Seira are Demon Slaying Superheroes that fight in mini-skirts. Naturally, there are plenty of Panty Shots.
• Demon Slaying: Hikaru and her friends on the student council are demon slayers that protect their school.
• The Dragon: Kotone Shiraishi to Barmus after she was Reforged into a Minion.
• Electric Torture: Kotone subjects Hikaru to this via Naughty Tentacles.
• Faux Action Girl: Hikaru and her friends were defeated and captured relatively easily by Barmus and Kotone at the beginning of the anime OVA.
• Fighter, Mage, Thief: The sword wielding Hikaru is the Fighter, Yuki is the Mage as she fights with magical talisman, while the gun wielding Seira is the Thief.
• Gag Boobs: Yuki who has the largest bust among the girls.
• Guns Akimbo: How Seira fights with her twin pistols.
• Hot Teacher/Sexy Mentor: Kotone Shiraishi to Hikaru and rest of the student council before she was Reforged into a Minion.
• Katanas Are Just Better: Hikaru preferred weapons.
• Lovely Angels: Hikaru, Yuki and Seira are a Power Trio variation of this.
• Miko: Yuki Ayatsuji.
• Naughty Nuns: Seira Kamui.
• Naughty Tentacles: Well it is a Hentai with monsters in it, so this is to be expected.
• Panty Shot: Plenty from Hikaru and Seira.
• Power Trio: The student council: Hikaru, Yuki and Seira.
• Reforged into a Minion: Kotone who has captured by Barmus at the begin of the story (game), or before the story (anime), and then repeatable raped and condition her to be The Dragon.
• Shameful Strip: After being captured, Barmus forced Hikaru, Yuki and Seira to strip down naked to front of their peer during an assembly, before raping Hikaru.
• Student Council President: Hikaru Izumi.
• Wake Up, Go to School, Save the World: Hikaru and the rest of the student council.
• World of Buxom: All the women are extremely well endowed, with the exception of Anastasia Augusto, who was removed from the OVA.