Tsukasa is an apparition who is lively and extremely childish and murdered by Yugi Amane, his brother, but still loves him to extreme and playing mind-games with him. He adores his older twin brother, Amane, and is attached to him and protective immensely. However, despite his childish personality and behavior, he is also capable of carrying out drastic acts of violence with no sign of remorse and is manipulative and not afraid to use violence when he doesn’t get what he wants and is a sadist.