Matsui Sakura is unexpectedly invited to a Revenge Game and decides to accept. Upon arriving at the designated location, she becomes trapped in a dormitory with four fellow classmates. The game, orchestrated by wealthy student Saionji, seeks to avenge the bullying he suffered, resulting in a murderous routine where one of his past offenders is killed every morning.
However, Sakura, a quiet, lonesome orphan, struggles to comprehend why she was invited, as she was never involved in any bullying, although her inaction could be the cause. Interestingly, Sakura is the sole recipient of an invitation, while her classmates were kidnapped or lured. But what is the ultimate purpose behind this gruesome game?
