Yukimura and the others will be giving presentations at the summer study sessions. There's less than a month left until the training camp, but Kosuke still hasn't picked a research theme. Professor Ikeda suggests research into "an algorithm that could instantly find the True End in any dating game." On the other hand, Yukimura and Himuro are focused on the hormone which is released when a person is touched by someone they love - oxytocin. By investigating the amount present in a person's saliva, they think they might be able to determine if the person loves the one who touched them, and they decide to immediately put it to the test with some close contact...
It's contact specifically with someone you 
love which causes oxytocin to be released.
بل الاتّصال الخاصّ مع شخصٍ تحبّه يؤدّي 
.إلى إفراز هرمون الأوكسيتوسين
Es braucht eine geliebte Person,
damit das Oxytocin ausgeschüttet wird.
Su liberación se causa por el contacto
específico con alguien que quieres.
Su liberación se causa por el contacto
específico con alguien a quien quieres.
C’est toucher l’être qu’on aime
qui relâche de l’ocytocine.
È il contatto specifico con qualcuno che ami
a provocare il rilascio di ossitocina.
A oxitocina só é liberada quando você
é tocada por alguém que você ama.
Только при прикосновении любимого 
человека выделяется окситоцин.