Koakuma Kyoushi Psycho

After a high school teacher is driven to hospitalization by relentless student bullying, the school assigns a substitute to take over his classroom. The replacement, Ms. Kasai, is a strikingly beautiful woman with an alluring figure who immediately captures the attention of her new students. Rather than being intimidated or offended by their crude and risqué remarks, she meets every provocation with a warm, unbothered smile. She cheerfully declares that she became an educator for one simple reason: to make her students happy. Her disarming demeanor and apparent vulnerability only embolden the class's worst troublemakers. Instead of respecting her kindness, the bullies begin devising cruel plans to torment their new teacher just as they did her predecessor. They see her gentle nature as an invitation to escalate their malicious behavior, confident that she will break under the pressure like the last instructor. However, these students have made a catastrophic miscalculation. Beneath her flawless appearance and perpetual smile lies a deeply disturbed mind. What the bullies fail to realize is that Ms. Kasai is a complete psychopath, and their sinister schemes are about to awaken something far more dangerous than they could ever anticipate.