Tsukasa is your guardian angel, only you can see him. He's a bit stubborn, and a sleepyhead. He stays in your room. He's reliable, even when he's so arrogant and kinda narcissist. He's very loud and extrovert. He doesn't remember why or how he died in his past life. He is an angel because there's something left for him to do, he doesn't know what it is, but it is for saving you.