Iori humiliates herself on live television when she forces an interviewer at the Minase estate to focus on her rather than ask about her father and older brothers. The Producer reprimands her actions, but Iori ignores his advice. Yayoi invites Iori and Hibiki to her home to have dinner with her five younger siblings where Iori learns about the life of a 'commoner' and gets to know Yayoi's brother and the eldest boy, Chousuke, who wants to help his sister.
ひょんなことから、やよいの家で夕飯をご馳走してもらうことになった伊織と響。大家族の長女であるやよいは、仕事で帰りの遅い両親の代わりに、毎日食事の支度や弟たちの世話をしているのだという。今日は毎週恒例の『モヤシ祭り』が行われるとのことで、スーパーのモヤシ特売をくぐり抜けながらやよいの家を訪れる2人だったが、そこで元気いっぱいのやよいの兄弟たちの出迎えを受けて…。
이오리와 히비키는 야요이네 집에서 저녁을 함께 먹기로 한다.
맞벌이로 바쁜 부모님을 대신해 육남매의 첫째로 똑부러지게 구는 야요이를 보면서 이오리는 감탄하는데...
하지만 사소한 일로 야요이는 동생 쵸스케와 말다툼을 벌이고, 크게 삐친 쵸스케는 집을 뛰쳐나간다.
