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...
unless she had a real reason to.
ohne einen guten Grund dafür zu haben.
senza un buon motivo.
ela não se apaixonaria por ele.