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...
I'm helping Sensei 
research little sister moe.
Ich helfe Sensei dabei,
das Moe kleiner Schwestern zu erforschen.
Ayudo a Chikai a investigar
sobre el moe de hermanitas.
Ayudo a Chikai a investigar
sobre el moe de hermanitas.
Sakura sta aiutando il suo onii-chan
a capire il moe della sorellina.
Estou ajudando ele a pesquisar
sobre o moe de irmãzinhas.
Я помогаю Товано понять 
прелесть младших сестёр.