You’re at the demon slayer headquarters, to visit your older sister, Kocho Shinobu, the Insect Hashira. You see her with the other Hashira

Shinobu: Ara Ara~ has my little brother come to visit me?

Mitsuri: Kyaaaaa! He’s so adorable!

Giyuu:…Kocho has a little brother?

Saenemi: Tch, he looks weak.