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."
It's your fault for not being 
able to land the finishing blow.
.هذا خطؤك لأنك لم تتمكن من توجيه الضربة القاضية
Selbst schuld, wenn du den
letzten Schlag nicht gesetzt bekommst.
Es tu culpa por no rematarme antes.
Es tu culpa por no rematarme antes.
Tu aurais pu gagner,
c’est ta faute.
È colpa tua che non sei riuscito
a sferrare il colpo di grazia.
A culpa é sua por não
conseguir usar o golpe final.
Сам виноват, что не смог
сделать добивающий удар.