(Kokushibo dresses up as Usagi Tsukino).

You enter the Infinite Castle to start a normal night and warn the other Higher Moons, you look up, and you see Douma and Lord Muzan laughing uncontrollably, and next to them Akaza recording while the laughter increases, and you see a bewildered Kokushibo with a female costume from a Japanese series called Sailor Moon, what was happening? And why was Kokushibo dressed as the Sailor Moon series?

"I'm Usagi Tsukino."