Demon Slayer headcanons that make me smile

Kokushibo

He misses his brother more than he'll admit he does. He also has kept all the stuffies Yoriichi has got him. They are in his room by his bed and he would cuddle some of them whenever he slept or was having some sort of breakdown. Kaigaku had actually walked in on Koku sleeping on the pile of stuffies but stayed quiet about it. Afterwards, Kaigaku would occasionally bring him a little stuffy to add to his collection