伊知川の家に居候するミモラ。だが、互いのわがままな性格がかみあわず大騒ぎになる。翌日、伊代菜と仲良くする本丸を見た伊知川は、意地悪な心がうずき、偶然出会ったにるるを本丸に化けさせる。
Mimora lives at Ichigawa's house. However, their selfish personalities don't get along with each other, and a big fuss ensues. The next day, when Ichigawa sees Honmaru befriending Iyona, his spiteful heart tingles and he transforms Niruru, whom he met by chance, into Honmaru.
