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.
It spins the vessels containing 
the liquid around and around,
.تقوم بتدوير الأوعية التي تحتوي على السائل باستمرار
Dabei werden die Zentrifugengläser
mit der Flüssigkeit im Kreis gedreht,
Elle fait tournoyer les échantillons
qu’on y place
Fa girare e girare la provetta che contiene il liquido
Ela gira os tubos de ursaio
contendo líquido
Она крутит и крутит пробирки
с жидким раствором,