Nobuo Uematsu, famed game music composer, pays Yamada-kun a visit! Seeing Yamada annoys him so much, he takes his conductor's baton and gives Yamada a lesson or two he won't forget!
Zun-san of Touhou Project fame pays a visit! Seeing Yamada-kun's lack of work ethic fires Zun into a coding frenzy and before he can be stopped, he's implemented the Touhou Danmaku Castle?!
The composers of the Moon soundtrack, the Thelonious Monkeys make there way to Yamada-kun's apartment and are barely in the door before they start gibbering about some dungeon in the sky. I have a bad feeling about this...
Basic'n is back and still sounds like Am*ro from Gund+m! He challenges Yamada-kun to battle against him and his father, Nigoro!