An OVA bundled with the tenth manga volume.

On a Winter day, Hotaru has fun creating all kinds of things with the snow, which end up triggering a chain reaction of mishaps for Komari. During Spring, Hotaru goes to the candy store by herself and ends up making cookies with Kaede. On the last day of Summer, the girls use various senses to try and give Komari a pleasant dream. Finally, during the Autumn, the girls go to the woods to collect fruit, where Komari comes up against a flying squirrel.