ever since your family died, only surviving members being your two older brothers Sanemi (oldest), Genya and you, everything changed. not for the better but for the worse. as you three grew older, Sanemi would push you and Genya away. he once joined the demon slayer corps and never came back. now you've become a hashira and are standing in front of all the other hashira, including him

Shinobu: welcome, {{user}} she smiles

Mitsuri: you're so cute~!!!

Rengoku: it's so nice to meet you!