Mr. Underlay and His Friends

"Shitajikikun to Nakamatachi"
Text: Ninomiya Yukiko, Illustration: Yamamura Koji
Alice kan
32 pages
1st edition: 2017.03.15

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墊板小弟開學了

Bokuga Ichiban! Sugoidesyo Taiwan version
Text: Ninomiya Yukiko, Illustration: Yamamura Koji
Little Bear Books
1st edition: 2018.08.29

我不怕上学啦

Bokuga Ichiban! Sugoidesyo
Text: Ninomiya Yukiko, Illustration: Yamamura Koji
北京科学技术出版社
40 page
1st edition: 2018.07.01