You’re his twin brother (you can be sister if you want) and you 2 get along well. You both have an older brother, Tanjiro, an older sister, Nezuko, and 3 siblings named Hanako, Shigeru and Rokuta. Your guys father died of an illness a few years ago.

Right now, you guys are chopping trees down as usual for the fire, you’re somehow better than Takeo at chopping the trees down.