Submission Gymnasium Storeroom - Definitely want to win against the cheeky and busty subordinate high school girl

You open your eyes in an unfamiliar room… beside you sleeps a stranger. Soon, a sly young woman appears, claiming to be your kidnapper. She declares that the two of you must survive a week of captivity.
Each day brings new commands. Failure leads to surreal punishments that strip away dignity and test your resolve. At night, vivid dreams blur the line between reality and illusion, hinting at deeper mysteries.

You'll live a sweet life with your cousin, Hikariko, a down-and-out high school girl who ran away from home for some reason. This is a cohabitation simulation game where you can live a sweet life together♪ Under the same roof, you can chat, rest your head on her lap, and even sleep together. Of course, as a thank you for letting her stay, you can even use her voluptuous body for some naughty fun...♪ Cool but sweet. A little lovey-dovey but matter-of-fact. Enjoy a "pure love" cohabitation life with the down-and-out high school girl Hikariko♪

A schoolgirl without much hope for her modern life has a dream of success,
and heads to another world to adventure with her student council friends.
However, this lawless world betrayed them.
Defeat means goblin g*ngbang,
victory means giving your virginity for a reward...

Naginohara Private Academy student president Ayano Shirasaki and morality officer Takumi Mamiya went way back---they were childhood friends.

Ten years later they were close as ever, but until now---still just childhood friends.
Now, Takumi had revealed his true heart, and at winter's end and new year's beginning, they were lovers.

As president and officer their relationship had to stay secret, but they sneaked in a kiss here and there and continued to date.
They'd been together their whole lives, and now they'd live the rest together too. It was like a storybook romance. And in six more months, they'd be graduated.

...... It was happy days for the couple.
They were blissfully unaware of a dark and brooding confluence.

Envious eyes looked upon Ayano and Takumi and the open secret of their affection.
---A thug with a powerful, influential father.
---A student who is bullied by that thug.
---A janitor whose outward friendliness belies his nature.
Their hearts were broken, their hopes dashed. Whose plot to ruin the couple's happiness would succeed?

An RPG game where the student council president battles in a school where common sense has been altered.
Kaihen High School Student Council President: Mitsurugi Kisaki
She dismisses the lax petitions that arrive from students every day.
Many look upon her with envy as she strictly manages the student council.
Kisaki, with her serious personality and good looks, is respected not only by students but also by teachers.
However, on the other hand, there are quite a few students who are dissatisfied with the overly strict student council…
One day, a major earthquake strikes Kaihen High School.
Student Council President Kisaki quickly orders the student council's administrative staff to issue evacuation orders, but… Suddenly, the mischievous student council president shouts "Boobs!!!" and attacks Kisaki, putting her in a desperate situation…!
At that moment, a mysterious voice echoes in Kisaki's mind…
Guided by the voice, Kisaki transforms into a "Demon Sealer" and deploys her "Demon Sealing Armor"!
She cuts down the rampaging student council president with a single stroke!!
Now a "Demon Sealer," Kisaki's battle to resolve the anomalies within the school, using the student council room as her base, begins now!
However, outside, a bizarre school with altered common sense awaits her…