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."
And since they're in the attachment phase, 
they release a lot of oxytocin.
.وبما أنهما في مرحلة الارتباط، فهما يفرزان الكثير من الأوكسيتوسين
Da sie sich in der Phase der Anhänglichkeit
befinden, schütten sie viel Oxytocin aus.
En la etapa del apego
se secreta más oxitocina.
En la etapa del apego
se secreta más oxitocina.
C’est la phase d’attachement
qui déclenche la sécrétion d’ocytocine.
E, visto che sono nella fase dell'attaccamento,
rilasciano molta ossitocina.
E como estão na fase de ligação,
eles liberam mais oxitocina.
И поскольку у них период привязанности,
они вырабатывают больше окситоцина.