At the Okinawa training camp, Yukimura and Himuro shared a kiss of the highest theoretical value on a bridge of the greatest mood value under the beautiful, painterly rays of the morning sun. But the amount of saliva they collected was insufficient and so retesting is required. They head to the biological sciences' Regulation of Biological Systems Department to meet with a specialist in saliva testing. There, they find an alluring woman dressed like a traditional courtesan wearing a lab coat, Suiu, and her sweetheart, Chris. When Yukimura asks Suiu and Chris to help with their experiment to "give proof of love," Chris and Suiu flaunt their overwhelming aura of love.
Not everyone is proud or confident 
in their feelings of love.
.لا أحد فخور أو واثق بمشاعر الحبّ خاصته
Nicht jeder ist sich seiner Liebesgefühle
so sicher oder stolz darauf.
No todos se sienten tan seguros 
y orgullosos de sus sentimientos.
No todo el mundo está tan seguro
y orgulloso de sus sentimientos.
Être assuré de ses sentiments
n’est pas donné à tout le monde.
Non tutti sono fieri o sicuri di sé
quando si tratta dei loro sentimenti romantici.
Nem todo mundo tem certeza
ou orgulho do amor que sente.
Не все люди гордятся своими чувствами
или уверены в них.