Completed the master's program at the Graduate School of Humanities, the University of Tokyo, and withdrew at the completion of the doctoral course. Completed the Graduate School of Information Science, Nara Institute of Science and Technology, Ph.D. (Engineering). After serving as a lecturer at Meikai University and a researcher at the National Institute for Japanese Languages ​​Research and Development Division, etc., he took his current position in 2017. Councilor of the Japanese Society for Japanese Studies.

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Specializes in Japanese language (Japanese language), corpus linguistics, natural language processing. My background is a study of Japanese history, and I am doing research using a corpus. Engaged in corpus development at the National Institute of Japanese Languages ​​and majored in natural language processing at the Nara Institute of Science and Technology while he was in the office. Currently, he is working as a leader in the construction project of "History of Japanese Corpus", which enables diachronic study of Japanese.