非公開日誌 (Hikoukai Nisshi)

Background
This song was originally commisioned for the EXIT TUNES compilation album Storytellers RPG, with a "voyage" theme. It is also featured on Mikito-P's third doujin album Vocalo Danshi Vocalo Joshi. The PV was later uploaded to promote Mikito-P's first major album Boku wa Hatsune Miku to Kiss wo Shita, once again released by EXIT TUNES.

This song entered the VOCALOID Hall of Fame on January 21, 2013 (after 4 days and 9 minutes).