超大物ゲスト、参戦！？ (Chou Oomono Guest, Sansen!?)

Chou Oomono Guest, Sansen!? is a song sung by Miku Hatsune with Akane Kotonoha and Rin Kagamine doing the chorus. It is the thirty-eighth track, the thirty-ninth track, and the fortieth track in Other Vocaloid Songs 119.