- started directing films as a student at Tama Art University
- later joined Pyramid Film Co. Ltd. and directed some television commercials between her short film projects (for Benesse, et al.)
- made her feature film directorial debut with Wool 100% (2006). Wool 100% had won the Sundance/NHK International Filmmakers Award at the Sundance Festival in 2003.
- official website
- Koyanagi, Michiyo. Interview with Mai Tominaga. Coco Montreal. 23 Sept 2010.