In order to prevent the novel's heroine from being revised, Yuu must perfect his love of little sister moe. Yuu and Suzuka both attend Sakura's radio program as guests, and Yuu begins flirting with Suzuka while on air as part of his training to become moe for little sisters, but...
So I need to repay you, Onii-chan.
Und deshalb muss ich mich
bei dir revanchieren, Onii-chan.
Tengo que pagarte la deuda, hermano.
Tengo que pagarte la deuda, hermano.
Je te dois une fière chandelle,
grand frère.
Quindi devo ripagarti del favore, onii-chan.
Por isso eu preciso retribuir, Onii-chan.
Поэтому мне нужно чем-нибудь 
отплатить тебе, брат.