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."
Please do not speak ill of him when 
you know nothing of the situation.
.أرجوك ألا تتحدّث عنه بسوء وأنت لا تعلم شيئا عن الوضع
Bitte spar dir deine Beleidigungen,
wenn du doch keine Ahnung hast.
No sabes nada,
así que no hables mal de él, por favor.
No sabes nada,
así que no hables mal de él, por favor.
Ti prego di non parlare male di lui
visto che non conosci la situazione.
Por favor, não fale mal dele
sem saber dos fatos.
Не говори о нём плохо,
когда не знаешь всей ситуации.