Pianist known for his arrangements by ear of Touhou Project songs, Music Games, Vocaloid songs and Anime songs, mainly with a jazzy feel.
He has also composed various songs such as 月景色, 夢、時々… or 片思いコメット (Instrumental) Born on March the 10th, 1990. Currently lives in Nagoya. Marasy has been uploading his videos since August 2008 on Youtube and Niconico Douga at the same time. He also makes live broadcasts via his community on Niconico Douga where he talks with the users while playing piano. From his talks he has been nicknamed, "bocchi", meaning "loner".