Himitsu
Japanese title: 秘密
Type: Music
Episodes: 2
Source: Original
Studios: Studio Gohan
Duration: 4 min per ep
Rating: G - All Ages

There is two versions of this music video.

Both videos feature the same song, but one is sung by Hatsune Miku on Niconico, and the other is a self-cover from the author himself, Harumaki Gohan on Youtube.