Chitchana Nezumi-kun

An elephant huffs and paws at a mouse's tail. The little mouse was disappointed and said, "It's not my fault because I'm small and not very conspicuous. But the elephant noticed.
The latest book in the long-selling "Nezumi-kun no ehon" series, now in its 41st year and becoming increasingly popular. This is a story that makes you realize the most important thing for both children and adults.