At long last, it's the first day of the summer training camp. On the plane, Yukimura presses close to Himuro and tries to collect her saliva in spite of the surrounding gazes. Manga artist Yamamoto observes them with an eerie smile. On the beach in Okinawa, the midsummer sun shines down on Yukimura and Himuro in their swimsuits, and they immediately attempt to begin their close physical contact experiment. However, since they're doing it, they choose to seek "the position which offers two people having close physical contact the greatest contact area"...
The human body has more surface area 
on the front than on the sides, so
لدى الجسد البشريّ منطقة تلامس أكبر 
،في المقدّمة عكس الجانبين لذا
Der menschliche Körper hat an
der Front mehr Fläche als an der Seite.
El cuerpo humano tiene una mayor
superficie al frente que a los lados,
El cuerpo humano tiene mayor
superficie por delante que de lado,
Le corps a une plus grande superficie
de face que de profil.
Il corpo umano ha una superficie
più ampia davanti rispetto ai fianchi,
O corpo humano tem mais
superfície frontal do que lateral,
Площадь передней и задней 
поверхностей тела больше, чем боковых.