Killing Curriculum: Jinroh Shokei Game Prologue (2015)

In this prequel to Jinroh Shokei Game, high school student Niina is kidnapped on his way home and wakes up in an unknown place with former classmates and a teacher. The group is forced to participate in a deadly and sadistic game known as "The Werewolf Game." Niina will form a deep bond with Sakiguchi, a former classmate who soon confesses his love for Niina and vows to protect him. However, it soon becomes apparent that Sakiguchi is not who he claims to be.