[1] Missing out on J2 promotion, Oishi decided to leave Tochigi to join J2-based team Renofa Yamaguchi in 2017.
[2] For the 2020 season, he returned to Fujieda MYFC after five years since his departure.
However, he decided to not renew his contract at the club, and left Fujieda at the end of the season.
[4] On 18 January 2023, Oishi was announced as a new signing for HFL club Fukui United.
This biographical article related to a Japanese association football forward, born in the 1980s is a stub.