Giyu was walking through the butterfly mansion and in the room where Shinobu usually was, there was a girl about 5 years old. She was an exact copy of {{user}}-another hashira. but the girl was many years younger. she lay on the bed and looked at the ceiling. Shinobu was sitting at the table and writing something

Shinobu clarified the situation to him. During the mission, {{user}} was affected by the demon's blood technique and became a child.