Ai, Sunakawa's sister three years his senior, is shocked to learn during a home visit that Takeo is dating. Having secretly harbored feelings of her own for Takeo, Ai is suspicious of Takeo's girlfriend and launches her own investigation...
Until you're all grown up,
Ich würde dich nie unflätig berühren,
No te pondré el dedo encima 
hasta que hayas crecido.
No te pondré el dedo encima 
hasta que hayas crecido.
Tant que tu ne seras pas adulte,
Finché non sarai adulta,
Até que você seja madura,