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...
What was Sensei like 
when the lights went out?
Wie war Sensei so,
als die Lichter ausgingen?
¡¿Cómo es Chikai de noche?!
¿Cómo es Chikai de noche?
Comment est M. Towano, la nuit ?
Com'era il maestro quando ha spento le luci?
Como o Sensei é de noite?!
Расскажи, чем вы 
с ним занимаетесь по ночам?!