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...
"This is the Tale of a Little Sister Who 
Loves Her Brother Too Much to Cope":
„Die Geschichte einer kleinen Schwester, die nicht
mehr weiterweiß, weil sie ihren Bruder zu sehr liebt“.
Esta es la historia de una hermanita
que ama demasiado a su hermano,
Esta es la historia de una hermanita
que ama demasiado a su hermano,
des Tourments d’une sœur qui aimait
son grand frère plus que de raison,
"Questa è la storia di una sorellina
che ama troppo il suo fratellone",
"Essa é a História de uma Irmã que Ama
Tanto o Irmão que Não Sabe Lidar",
«Повесть о том, как сестра без ума
полюбила своего старшего брата».