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."
but the thought of touching the skin 
of a woman other than Sui is just...
...لكن فكرة لمس بشرة امرأة أخرى عدا سوي هو
ma il pensiero di toccare la pelle
di una donna diversa da Sui è...
não consigo encostar na pele de
uma mulher que não seja a Sui...
но даже мысль о прикосновении
к коже другой женщины...