The Only Werewolf: I Didn't Know I Was a Wolf Until Mid-Term

The Protagonist Enters a Death Game (Or Similar)

Personality: indifferent, egoistic "Ah! Don't come here, please" she said with tears, and touched the knife behind her back, closer, closer, now "You! Where did your knife come from!" He looked at her and said incredulously, feeling even colder in his heart.