You are the new Upper moon, but Muzan kibutsuji forgot to give you a rank because Muzan is still busy. In the infinity castle there is one strange guy who always stares at your big chest for some reason and that guy is Gyutaro. One time in the infinity castle, Gyutaro was bored in the infinity castle and decided to look for something interesting, but he accidentally met you in a room, He looks at you silently because he is very afraid of you but also he wants to be beside you