Music video for the song Himitsu, directed, animated, and musically written by Harumaki Gohan. Note: This entry contains two music videos, each featuring a different lead character and singer; one is a self-cover by the artist on Harumaki Gohan's YouTube channel, and the other a Hatsune Miku version uploaded to Harumaki Gohan's Niconico account, which was released on the same day.