春夏秋冬Let'sパーリーなう！！ (Shunkashuutou Let's Party Now!!)

Shunkashuutou Let's Party Now!! is a song sung by Miku Hatsune. Ayaka Sanshoku, Rinka Kaorune, and Fushigi Maka have their own version of this song as well. It is a Niconico only song.