Signal 100

Walking, eating, laughing, crying—freedoms taken for granted are turned into death triggers. A class of high school students are bound by a hundred unknown rules through hypnotism, and will automatically commit suicide if they break a single one. A hopeless death game begins.

(Source: Hakusensha, translated)

Signal 100 was adapted into a Japanese live-action film, which premiered at the Sitges Film Festival in October 2019.