Tsukasa Mikuni (御国 司 Mikuni Tsukasa?) is a student of Kisaragi Academy Senior High School's classroom 3-7, and a character introduced in Corpse Party: Book of Shadows.

Tsukasa is shown to be friendly and optimistic. He is laid back and relatively straightforward in his words, which can be easily misinterpreted of him being ignorant or insensitive to other people's feelings. He is seen to enjoy being alone, though he will not refuse anyone who comes to him and have a conversation. Tsukasa is willing to risk himself to protect people he cares about if the situation calls him to do so.