He has worked extensely in Toryumon Japan and Michinoku Pro Wrestling, where he is a former Tohoku Tag Team champion along with Kesen Numajiro.

He feuded with Taru and traded wins with him, eventually reverting to his true name and adopting the gimmick of a cram student who brought a textbook with him to the ring and studied during holds.

Taru also brought his mini version wrestler, Tarucito, to counter Oyanagi's antics, while Kinya teamed up with Takamichi Iwasa.

When El Dorado folded in 2008, he joined its next incarnation, Secret Base, as a regular member, but officially signing up with Michinoku Pro Wrestling.

Their success was short-lived, as they were eliminated from the Michinoku Tag League 2009 by another team of Kowloon (Hayato Fujita and Rasse) and ended losing the title in two months to stable members Maguro Ooma and Takeshi Minamino.