Tomohisa Sako (Japanese: 佐香智久 Sakō Tomohisa) is a Japanese musician who has written and sung various songs for the Pokémon anime starting in the XY series. He was born on December 26, 1991, in Sapporo, Japan.
Sako is also the producer of the Pocket Monsters XY&Z TV Anime Character Song Project.
Due to the cold temperature in his hometown, Sako began his musical career online in 2009 under the name Syounen T (Japanese: 少年T Shōnen T). After his first CD Promise was released on 2011 under his first name, Sako made his official debut under his full name in 2012.