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...
It's pretty weird for my little sister 
to pretend to be my little sister.
Ziemlich seltsam, wenn die kleine Schwester
die kleine Schwester spielt.
Es muy raro que mi hermanita
finja ser mi hermanita.
Es muy raro que mi hermanita
finja ser mi hermanita.
Ma sœur qui joue un rôle de sœur…
C’est curieux.
È strano che la mia vera sorellina
finga di essere mia sorella...
É estranho minha irmã
fingir ser minha irmã.
Как странно, что моя сестра 
притворяется сестрой.