Behind the camera
- 2022Saihara the Loan SharkDevelopment Producer, Screenplay15 ep.
- 2022Hey Handsome!!Producer8 ep.
- 2019The New KingDirector, Producer, Writer8 ep.
- 2018The Could've-Gone-All-the-Way CommitteeDirector, Screenplay9 ep.
- 2014Ushijima the Loan Shark: Super Taxi-kunDirector8 ep.
- 2010Ushijima the Loan SharkDirector, Screenplay27 ep.
- 2009Samurai High SchoolProducer9 ep.
- 2008Edison's MotherScreenplay10 ep.
- 2007The Pride of the TempProducer, Screenplay8 ep.
- 2001Kabachitare!Producer12 ep.
- 1997GiftProducer11 ep.
Also known as: 山口 雅俊 · 야마구치 마사토시