"Gigantic O.T.N" (Japanese: ギガンティックO. T. N, Gigantikku Ō Ti En) is a song composed by Giga-P, lyric by Reol and performed by Kagamine Len.
About the song
The music video of the song was first uploaded to Giga-P's NicoNico channel and Reol's Youtube channel on December 8, 2012. The video had reached 3,827,770 views on NicoNico and 1,242,219 views on Youtube.