Gentouki (ゲントウキ) is a Japanese band and solo performing name of singer-songwriter and producer Jun Tanaka. Gentouki has released 6 major singles and 5...

and Kuma (From chocolate) – Backing vocals (Track 6) Taiji Okuda – Mixing "ゲントウキ「誕生日」特設サイト". Official Gentouki website Tanjoubi special website v t e...