About the Authors

Haruyuki Ishikawa

Roles Conceptualization, Formal analysis, Investigation, Methodology, Writing – original draft

hayuruki@gmail.com

Affiliation Faculty of Letters, Arts and Sciences, Waseda University, Tokyo, Japan

Toshizumi Muta

Roles Conceptualization, Formal analysis, Investigation, Methodology, Writing – review & editing

Affiliation Faculty of Letters, Arts and Sciences, Waseda University, Tokyo, Japan

Tetsuri Abe

Roles Conceptualization, Investigation, Methodology, Writing – review & editing

Affiliation Faculty of Letters, Arts and Sciences, Waseda University, Tokyo, Japan

Nozomi Imajo

Roles Conceptualization, Writing – review & editing

Affiliation Faculty of Letters, Arts and Sciences, Waseda University, Tokyo, Japan

Fusako Koshikawa

Roles Conceptualization, Funding acquisition, Investigation, Methodology, Project administration, Supervision, Writing – review & editing

Affiliation Faculty of Letters, Arts and Sciences, Waseda University, Tokyo, Japan

Competing Interests

The authors have declared that no competing interests exist.