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"...
Which means, it would be difficult to increase 
the amount of close contact any more than this...
هذا يعني أنه سيكون من الصعب زيادة منطقة
 .التلامس القريب أكثر من هذا
Es wäre also schwer, die Kontaktfläche
noch über dieses Maß hinaus zu vergrößern.
O sea que sería difícil aumentar
el área de contacto más que esto.
O sea, que sería difícil aumentar
la zona de contacto más que esto.
Je crois qu’on ne pourra pas
augmenter plus la surface que ça.
Voglio dire, sarebbe difficile aumentare
più di così la quantità di contatto...
Fica complicado aumentar
a área de contato dessa forma...
Значит, будет затруднительно как-то 
увеличить площадь соприкосновения...