Makoto Sakamoto

Recruited by a clandestine police organization, "K" must stop a plot by student radicals to create anarchy in Japan. Armed with a hi-tech steel yo-yo, and a new name (Asamiya Saki), she must infiltrate an elite high school to find the terrorists but finds an even more sinister plan is about to unfold. (imdb)

Young Schoolgirl Asuka comitts suicide, but, 48 days later, her classmates receive a strange mail, inviting them to go to their class at midnight on that same day. Then, a person with a bloody rat mask appears and begins to hunt them, one by one...

Kanzen naru shiiku Meido for you: The seventh film of The Perfect Education series tells the tale of a man and a girl who pursue love to the point of madness. (letterboxd)