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.
For people like that, proof of 
love provides necessary support.
.بالنسبة لأشخاص كهؤلاء، فدليل الحبّ سيوفر الدعم الضروريّ
Für solche Menschen bietet ein Liebesbeweis
ein notwendiges Hilfsmittel.
Esas personas necesitan pruebas 
sólidas del amor en qué basarse.
Esas personas necesitan pruebas
sólidas en las que basar su amor.
Certains ont besoin de preuves
pour se dire amoureux !
Per quelle persone,
trovare prove dell'amore è un supporto necessario.
Pessoas assim precisam de provas
do que é o amor, para se apoiar.
И для них научное доказательство любви
окажется крайне важным.