Tsumetai Kousha no Toki wa Todomaru

Hiroshi and Mizuki arrive at school on a snowy day to find it strangely deserted. They soon discover they are trapped inside with six others, and all the clocks have stopped at the moment a former classmate died by jumping from the school roof three months prior. The deceased classmate is linked to their escape, but none can recall who it was. The students must confront their memories and uncover the identity of the suicide victim to avoid a similar outcome and prevent being forgotten within the cold, frozen school.