Though Yukimura and Himuro went as far as to kiss for the experiment, they were soundly beaten by Chris and Suiu's oxytocin levels in their saliva. Panicked, Yukimura suggests that they conduct control experiments. However, in the midst of the Yukimura/Suiu pairing, Suiu's seductive manner ends up causing Yukimura to ogle her charms. Seeing that, Himuro runs another experiment with Yukimura, but ends up sulking. The two end up having a lover's quarrel. Yukimura's behavior causes Chris to look down at him coldly and say, "As a man, you are a failure."
Why do you look so displeased?
لمَ تبدين مستاءة هكذا؟
Wieso wirkst du so angefressen?
¿Por qué luces tan molesta?
¿Por qué pareces enfadada?
Tu as l’air contrariée,
qu’y a-t-il ?
Perché sembri così contrariata?
Por que parece estar tão de mau humor?
Почему у тебя такой недовольный вид?