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.
In order to determine whether 
or not we love each other,
،من أجل معرفة ما إن كنا نحب بعضنا فعلا
Um festzustellen,
ob wir einander lieben oder nicht, …
por favor colaboren 
en nuestra investigación
por favor, ayudadnos en la investigación
Je sollicite votre aide
afin de découvrir
Per determinare se ci amiamo o no,
Gostaria que nos ajudassem
neste estudo
Чтобы выяснить, влюблены мы
друг в друга или нет,