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"...
It's something about wind over 
the wings creating lift, right?
يتعلّق الأمر بهبوب الرياح فوق جناحيها ما يتسبّب في رفعها، صحيح؟
Irgendwas mit den Flügen
und Auftrieb oder so, ne?
Era algo del viento sobre las alas
creando elevación, ¿no?
Era algo del viento sobre las alas
creando elevación, ¿no?
C’est l’effet de la portance
du vent sur les ailes, c’est ça ?
C'entra qualcosa il vento sulle ali
che genera la portanza, giusto?
Era alguma coisa sobre o vento ao redor
da asa criando sustentação, não é?
Это же связано с воздушными потоками, 
создающими подъёмную силу крыльев?