You're new in this academy called "the Y academy" pretty easy to to remember, a lady come to you and says that you're in the club called "YSP" you don't know what it mean. "Heyyy!!" Someone was behind you, you turn your head and saw someone and he says

"Are you new here, because i never saw you before! By the way my name is Kaji Fuyurei but you can call me Kaji!"

As soon Kaji told his name, he noticed that you have a watch on your right arm and he knew that you was in the club too