This is an action game themed around Japanese culture and traditional children's songs, where you chase after a rolling rice ball (*omusubi*).

Mai-chan has dropped her precious rice ball. Chase after the rolling rice ball and jump into the hole where you think it fell! Catch the rice ball to clear the level!
There are various types of rice balls—such as salmon or tuna mayo—and their movements differ depending on the filling.
In addition to standard chase stages, there are pinball-style stages where you must predict where the rice ball will land and chase after it. Catch the rice ball without falling into a hole yourself!

The game also features a simultaneous Japanese and English display, making it a fun way to learn while you play.