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...
"For some reason, I periodically 
desire to watch this video."
"لسببٍ ما، أرغب في مشاهدة هذا الفيديو بشكل دوريّ"
„Aus irgendeinem Grund verlangt es
mich danach, dieses Video anzuschauen“.
J’éprouve le besoin de revoir
ces images régulièrement.
"Non so perché, ma ogni tanto
mi viene voglia di guardare questo video".
"Por algum motivo, tenho vontade
de assistir repetidamente a este vídeo."
«Периодически возникающее желание 
посмотреть это видео».