さようなら、私たちに優しくなかった、すべての人々

[DeepL Translation - needs review] A girl gave her life to avenge the seven people who killed her sister Akada Town is a rural town surrounded by mountains on all sides. Nakagawa Shiori, a student at a high school in this town, has been skipping school because of bullying. One day, Sato Mei comes to Shiori's house as a roommate. Mei, who never opens his heart to anyone, tells only Shiori the purpose of his visit to this town.

I want to kill all seven people who sent my s...