170 pages, 6 unpaged : chiefly illustrations ; 21 cm
Note
Reads from right to left.
"First published in Japan in 2020 by Ichijinsha Inc., Tokyo."--Colophon
Summary
"Kuroe likes everything to be divided neatly into black and white. But the more time she spends caring for her "happy mouse" Niji-a mysterious, brightly colored creature that defies classification-the harder it is for Kuroe to keep living that way. Reaching out to other happy mouse owners means her world opens up in more ways than one."--Page 4 of cover