Synopsis
Michi and her family relocate to the Happiness House, an enormous tree covered and filled with various small buildings and homes. While exploring what will be her new room, Michi discovers a peculiar nut-shaped object. Soon after, a strange creature called Nanami-chan emerges from it. The two quickly form a close bond. Together, Michi and Nanami-chan explore new experiences, and each day they encounter more quirky residents of the Happiness House.