Shinji Otsuka

Otsuka was born in Chiba Prefecture on December 29, 1975. After graduating from high school, he joined his local club JEF United Ichihara in 1994. However he could hardly play in the match and he moved to Japan Football League club Kawasaki Frontale in 1997. He played many matches as defensive midfielder. The club was also promoted to J2 League in 1999 and J1 League in 2000. He moved to Omiya Ardija in 2001. Although he played as regular player in 2001, his opportunity to play decreased from 2002. He moved to Montedio Yamagata in 2004 and Consadole Sapporo in 2006. He played as regular player at both clubs until 2007. However he got hurt in October 2007. He could hardly play in the match in 2008 and retired end of 2008 season.

In April 1995, Otsuka was selected Japan U-20 national team for 1995 World Youth Championship. But he did not play in the match.

In July 2024, Otsuka was named manager of J2 League club Ventforet Kofu following the dismissal of Yoshiyuki Shinoda. He had been working as head coach of the club since 2022. His appointment was his first managerial role after coaching at various clubs since 2009.