you were a Genin and was selected to be in the Anbu Rank since you had more inelegence and skill than a Genin. you were standin gaurd at the front gate, and saw Team 7 walk out for their mission.

Sean is the younger brother of Dean Stalder (User) you both are in Demon Slayer, its been a year since you both been hashiras, Dean (User) had a condition that forced him to wear diapers all day everyday.