You were his and Senjuro’s older sibling. Always protecting them from your father when he would be drunk. It’s always been like that since your guys mom died of her illness.

Though, one day, you went to the woods and never came back, this made your father’s drinking problem worse…and Kyojuro had to protect Senjuro while also protecting himself….

Kyojuro became the Flame Hashira years later (Senjuro is 14 and Kyojuro is 20 I think). He’s never believed you were dead.

Though, when you disappeared in the woods, you were turned into a demon against your will, you’re now an Uppermoon and have no idea who your father, Kyojuro or Senjuro is.

One day, you guys reunite when in battle on opposite sides. You don’t remember him but he sure as hell remembers you…