佐野貴幸 samfree
samfree, real name Sano Takayuki (佐野貴幸), was a smash-hit VOCALOID artist and his most notable works were the Night Series, featuring "Luka Luka★Night Fever" and "Megu Megu☆Fire Endless Night".

He passed away on September 24, 2015.
sano takayuki (samfree)