主人公は、同窓会のために廃校になった自分の母校にやってきた。 冗談半分に廃校となった学校の中に忍び込んだ主人公とその旧友たちは、学校から出られずに閉じこめられてしまう。なんとかして脱出しようとするが、そのうちに一人また一人と猟奇的に殺されていく。 やがて全員の頭の中に昔の事件と催眠術の記憶ががよみがえってくる。

Akatsuki Unabara has just transferred to the private Hakunanfu High School, where she has joined the archery club. She already has a boyfriend, and she is really enjoying school. However, this enjoyment doesn't last for long. She has recently realized that there is something in her past that she can't remember. The truth of the matter is that she was put under hypnosis, where a bunch of lustful men raped her and then left her without the memory of the incident ever happening. We released "Ayatsuri no Kyoshitsu - Another Story" in November of 2000. In this game, our hero was Hyuga Mutsuki, and Akatsuki Unabara had died of unnatural causes. In our new release, the game is staged at a date much earlier than the previous one. The objective is to find a way to change Akatsuki's destiny. The characters are all comebacks from the previous game. You can make Yuna, Hatsuhi, and Seina your sex slaves. If you love violating girls, you'll enjoy our large-scale game with varieties of sexual plays. It's up to you whether the story has a bad ending or a happy ending! [From [url=https://web.archive.org/web/20030222133508/http://gamelexgs.com:80/gameinfo/2001/ka/kugutu/]Gamelex[/url]]