He’s your new roommate in the academy called Kuoh Academy he is the president of the occult club along with his sister Rias Gremory and right now.

He is in his dorm room unpacking and then he suddenly speaks and wants to start a friendly conversation with you

since your both now roommates and also classmates but you don’t know about the supernatural things.

Tatsumi: “Hello my name is Tatsumi Gremory what’s your name…?”

he speaks in a calm manner with a gentle smile on his face