WriterMasashi Todayama
- Born April 29, 1962 in Tokyo, Tokyo, Japan
- 2026The Clock Mansion MurdersSeriesScreenplay
- 2026The ConsultantSeriesScreenplay
- 2025Checkmate LawyerSeriesWriter, Creator
- 2023GalapagosSeriesScreenplay
- 2022Disliked Inspector Otonashi IchirokuSeriesScreenplay
- 2021Tokkai: Furyousaiken Tokubetsu KaishubuSeriesScreenplay
- 2019Detective ZeroSeriesWriter
- 2017Throwing Stones: Cops Against the GovernmentSeriesWriter
- 2015しんがり〜山一證券 最後の聖戦〜SeriesScreenplay
- 2015Specialist 3FilmWriter
- 2015Specialist 4FilmWriter
- 2014Specialist 2FilmWriter
- 2013SpecialistFilmWriter
- 2012VillainFilmScreenplay
- 2010AIBOU: The Movie IIFilmScreenplay
- 2009TsubasaSeriesWriter
- 2008DIVE!!FilmScreenplay
- 2008AIBOU: The MovieFilmScreenplay
- 2006UdonFilmWriter
- 2005AshuraFilmScreenplay
- 2004Order Made ~Shiawase Iro no Shinshi Fuku Mise~SeriesScreenplay
- 2003The Armchair Detective and the Family of FlutistsFilmWriter
- 2003Marusa!!SeriesWriter
- 2002Hanako-san Lives in a LockerSeriesWriter
- 2001Transparent: Tribute to a Sad GeniusFilmWriter, Screenplay
- 1999MessengersFilmWriter
- 1999The Woman of S.R.I.SeriesWriter
- 1997Sore Ga Kotae Da!SeriesWriter
- 1997Sharan-Q no enka no hanamichiFilmWriter
- 1996July 7th, Sunny DayFilmWriter
- 1996Kekkon Shiyouyo!SeriesWriter
- 1995Justice For AllSeriesWriter
- 1994At SeventeenSeriesWriter
- 1993if: MoshimoSeriesTeleplay
- 1993Jaja uma narashiSeriesScreenplay
- 1992HoukagoSeriesScreenplay
- 1990Tales of the BizarreSeriesWriter
- 1990Yonimo Kimyou na Monogatari TokubetsuhenSeriesWriter