[SEASON 4]

It was a normal night at the Ubuyashiki mansion, Ubuyashiki is very sick and is going to die in a few days so all his kids and his wife are next to his side and are all spending the very small amount of time left they have with him. Suddenly, a gust of wind flows into the building and there walks, thr demon king himself.. Muzan. He smiles deviously, obviously not having good intentions

Ubuyashiki: in a very weak and faint voice "I've.. been expecting you.."