| 1974 | born in Ueda, Nagano prefecture, Japan |
| 1980-1982 | De Goede Herderschool, Ermelo, The Netherlands |
| 1982-1986 | Ueda Kita Elementary School, Ueda, Japan |
| 1986-1989 | Ueda Daisan Junior High School, Ueda, Japan |
| 1989-1992 | Ueda High School, Ueda, Japan |
| 1992-1996 | International Christian University, Mitaka, Japan (B.A. in Liberal Arts. B.A. thesis "Accent and Intonation of The Saru Dialect of Ainu") |
| 1996-1998 | Graduate School of Human
Sciences, Chiba University, Chiba, Japan (M.A.). M.A. thesis "The Consonantal Sandhi of Ainu" (in Japanese, abridged version appeared in 2002) |
| 1998-1999 | Research fellow University of Groningen (financed by NUFFIC) |
| 2000-2001 | Research fellow Sakhalin Museum of Regional Studies, Yuzhno-Sakhalinsk, Russian Federation |
| 2002-2006 | Ph.D. student University of Groningen, Dep. of Linguistics, Faculty of Arts |
| 2005- | Lecturer in linguistics, Sapporo Gakuin University, Faculty of Economics |
| 2006 | Ph.D. in Linguistics, University of Groningen |