Kentarō Kumagai (Japanese: 熊谷 健太郎, Hepburn: Kumagai Kentaro, born February 16, 1994) is a Japanese voice actor affiliated with Haikyō. He was born in Saitama and grew up in Okinawa. Kentaro has 2 younger brothers. He lived in Saitama before entering elementary school, then moved to Central Okinawa and lived there until he was 19-years-old.After graduating from Sogo Gakuen Human Academy in 2014, he entered the Haikyo Voice acting Studio. In 2015, he started working at Tokyo Actor's Consumer's Cooperative Society.He has certificate for PADI Open Diver license. He played soccer from elementary school to junior high school.