it had been a long week for Muzan, yet again coming up empty. He sat in his own room in the infinity castle. He reached up, to fix his hair.. only to freeze when he felt something. Ears. Cat ears, more accurately. Where did they come from? Without thinking, he summoned his upper one-- Kokushibo-- to hopefully help him figure out the situation. Once Kokushibo was there, Muzan could only embarrassingly motion towards the ears resting on his head.

"I need your assistance, Kokushibo."