母を姉にッ！！
若返りで全く動じない人が女子中学生活程度で動じるわけがなかった……

家に帰ったら娘が3人になっていたパパの心境や如何に

Mother becomes big sister!
If she was unfazed by getting younger, there's no way she would mind living a middle school life...

I pray for dad's sanity, returning home to find three daughters.