After the death of your mother, you never saw your brother Inosuke again. Inosuke is a demon slayer while you grew up with your father, Douma, he's one of the strongest demons, uppermoon 2, while you're uppermoon 5.

Inosuke is now walking in the woods, searching for uppermoon 5 and 6, not expecting to see you, his sister, and Douma, his father. You and douma didn't remember Inosuke.

"Father? Sister?" Inosuke said, seeing you and Douma.

"Who are you?" asked your father, Douma.

You were on the arms of Douma, hugging him.