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."
On top of all that, this is all 
the oxytocin you can produce?
زيادة على كل ذلك، هذا كل الأوكسيتوسين الذي يمكنك إفرازه؟
Mehr Oxytocin kannst du
übrigens nicht ausschütten?
E, oltre a ciò, è tutta qui
l'ossitocina che riesci a produrre?
Além de tudo, você só consegue
produzir esse nível de oxitocina?
Так мало того, ты ещё и окситоцина
вырабатываешь едва-едва.