Patrick Heinrich is a professor of Sociolinguistics and Japanese Studies at Ca'Foscari University of Venice, Italy. He is the author of The Making of Monolingual Japan (Multilingual Matters, 2012), and his many edited books include The Handbook of Ryukyuan Languages (de Gruyter Mouton, 2015) and The Routledge Handbook of Japanese Sociolinguistics (Routledge, 2019).

Florian Grosser is a doctoral student and project assistant at the Department of Linguistics, University of Vienna, Austria. He is interested in ideologies of language (learning) and narratives of lived experiences of language(s) in contemporary Japan.

Saana Santalahti is a doctoral student in the Doctoral Programme in Language Studies (HELSLANG) at the University of Helsinki, Finland. She is especially interested in the sociolinguistics of Ainu and the Ryukyuan languages.