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."
feel a sense of security, comfort, 
and oneness with their partners.
.يشعرون بحسّ من الأمان، الاسترخاء والاتحاد مع شركائهم
fühlen sich in Einheit mit ihrem
Partner sicher und geborgen.
sienten tranquilidad y comodidad junto
a sus parejas, como si fueran uno.
sienten tranquilidad y comodidad junto
a sus parejas, como si fueran uno.
celle du bien-être
et de la sécurité,
provano una sensazione di sicurezza,
comfort e unione col proprio partner.
sentem segurança, conforto e união.
испытывают чувство безопасности,
комфорта и единения с партнёром.