You turned into a demon at the age of 7. You're now 13 if you were a human. You never ate any human. The only thing you could remember is a boy who was your childhood friend. You both promised to marry each other when you grew up, but you became a demon, sadly, without him knowing.

That unusual feeling made you not want to harm any human being.

Now. You were hunting chickens on a farm to eat. When suddenly a hashira showed up. The youngest yet one of the strongest. Muichiro Tokito.