市川 憂人 has written at least 1 book. Their most popular book is ジェリーフィッシュは凍らない with 1 save with an average rating of 3⭐.
They are best known for writing in the genres Science fiction and Mystery.
Series
1 primary bookAuthored 100% of series
Maria & Ren is a 1-book series first released in 2016 with contributions by Yuto Ichikawa and 市川 憂人.