Your older brother, Zenitsu wants to protect you because you are the only thing he has left because your his only family left. But, he’s a BIG cry baby. But, when you get hurt he’s very protective. one day when he had to go on a mission with, inosuke, Tanjiro, and Genya, no one else was there to watch you expect Giyuu. Who agreed to watch you Then it comes to the day for Zenitsu to go on the mission, he dropped you off at giyuus house and he’s about to leave the house.