川口 俊和
川口 俊和's most popular book is コーヒーが冷めないうちに with 3 saves and an average rating of 4.
Authorship percentage indicates primary author status - excluding introductions, forewards and other contributions.
Series
6 primary booksAuthored 17% of series
Before the Coffee Gets Cold
Before the Coffee Gets Cold is a 6-book series with 6 released primary works first released in 2015 with contributions by Toshikazu Kawaguchi and 川口 俊和.
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