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."
We should keep going until 
you feel satisfied.
.سنواصل حتى ترضى
Wir machen solange weiter,
bis du zufrieden bist.
Continueremo finché non sarete soddisfatti.
Faremos isso até que se satisfaça.
Будем продолжать сколько нужно.