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...
Because I'm your "deredere" 
little sister right now.
Immerhin bin ich gerade
deine „Deredere“-Schwester.
Porque ahora soy tu hermanita deredere.
Porque ahora soy tu hermanita deredere.
Vu que je suis une sœur
affectueuse,
Perché adesso sono la tua sorellina "deredere".
Porque sou uma irmã deredere.
Ведь теперь я для тебя «дере-дере».