 Coach Massimo Ficcadenti decided to use him from the first league round and, at the end of the season, Muto reached 33 appearances and scored 13 goals, matching the top debut record in the Japanese first division.At the end of the season, he was part of the J-League's Best XI.Muto graduated from Keio University in March 2015, and the following month was subject to a bid by Chelsea.