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."
Since there wasn't the nervousness 
that happens between men and women,
،بما أنه لا يوجد التوتر الناجم عادة عن التقاء الرجال والنساء
Bei uns fehlt die Anspannung
zwischen Mann und Frau.
Al no ser del sexo opuesto,
Al no ser del sexo opuesto,
Sans toutes ces tensions,
Visto che non c'era l'agitazione presente tra uomini e donne, 
abbiamo stabilito un contatto
Como não há a apreensão como
entre um homem e uma mulher,
Нет неловкости
как между мужчиной и женщиной,