Mitsuki second single will be "ETERNAL SNOW," a secret song by the legendary band, ROUTE:L, and written by Mitsuki's father, Aoi. Coincidentally, Madoka chooses to debut as a singer with that very song, and intentionally pick Takasu as her producer, so he can't help Fullmoon's next song because of that. Then Mitsuki and Oshige thought of requesting Wakaoji since he was in the same band.