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."
Then he'd be so dense, 
it made me want to knee him.
.وعندما يتصرف بجهل أرغب في ضربه
Im nächsten Moment war er so dämlich,
dass ich ihm mein Knie reinrammen wollte.
pero es tan lento que te dan
ganas de darle un rodillazo.
pero es tan lento que te dan
ganas de darle un rodillazo.
Je l’aurais presque cogné
pour qu’il s’en aperçoive.
Poi si è dimostrato così ottuso che
mi è venuta voglia di dargli una ginocchiata.
Mas ele é tão lerdo que me dava vontade
de meter meu joelho nele...
А за недогадливость мне хотелось
его пнуть.