みんな〇んじゃえ みんな しんじゃえ

Classroom bullying, online harassment, and abuse from his own mother… Masaru, a fifth-grade elementary school student, is surrounded by an environment that is unbearably cruel. One day, a mysterious creature called “Kyuu-chan” appears before him. The true nature of this strange being is revealed to be a creature of madness that resonates with Masaru’s hatred and mercilessly slaughters those who torment him…!?