10年後、完全なギャルへと変貌を遂げ、少しがさつになってしまった城ヶ崎莉嘉(22)に、無邪気で可愛かったあの頃の自分を思い出してもらうため、『DOKIDOKIリズム』の歌詞を朗読してあげる優しい武内Ｐ。

10 years later, the kind Takeuchi P that read the lyrics for "Heartbeat Rhythm" to a 24-year-old Jougasaki Rika, who completely transformed to a gyaru and has become a little ill-mannered, to remind her of the days when she was pure and cute.