Four minutes and it's already lodged in your skull, which is exactly the Kagerou Project trick. Jin builds it like a pop song that's smiling too hard, IA's vocal pitched bright and brittle over a hook that refuses to leave, and Wannyanpu's animation keeps pace instead of just decorating it. This is one of the Mekakucity Records cuts, dropped as a CD track first and only given its video a month later, so the fandom spent weeks with the sound in their heads before they ever saw the pictures. That's why the visuals hit like confirmation rather than introduction, every cut landing on a beat you already knew by heart. It got folded into Mekakucity V's in 2014, canon-stamped, and it still plays best the way it was made to: loud, on repeat, at an hour when you should be asleep.

Hibiya Amamiya has lost a friend, and since then nothing in the world seems bright to him. Momo Kisaragi, a high school idol, decides to show him that there is still a reason to keep going. His grief stays with him like the full moon hanging in the night sky, but Momo may yet bring the light back to his eyes. The single-episode music video was animated by Wannyanpu for Jin's song Otsukimi Recital, sung by IA, and the song appears on the Mekakucity Records CD.