In 2007 while browsing the music cover section of popular internet video - sharing site Nico Nico Douga , Piko 's mother encouraged him to upload his own covers .
Piko became widely popular on this site .
In 2007 while browsing the music cover section of popular internet video - sharing site Nico Nico Douga , Piko 's mother encouraged him to upload his own covers and he became widely popular on this site .