Ibarada suggests that one of the greatest factors in the base conditions of romantic love is "whether or not you want to kiss the person," so Yukimura decides to try to kiss Himuro. However, Himuro doesn't like the idea of a kiss where the exact angle is measured with a protractor.  When Himuro realizes that if the mood were more like it had been in the Ferris wheel, she might not mind a kiss, she and Yukimura create an equation to numerically define "mood value." In what location might the "mood value" be highest? And will the two of them be able to kiss...?!
What did you do during 
your experiment with Himuro.
ما الذي فعلته خلال تجربتك مع هيمورو؟
Was hast du während des Experiments
mit Himuro gemacht?
¡¿Qué hiciste
en tu experimento con Himuro?!
¿Qué hiciste
en tu experimento con Himuro?
que s’est-il passé avec Himuro ?
Cos'hai fatto durante l'esperimento con Himuro?
O que fez com a Himuro
durante o experimento.
Что было во время эксперимента 
с Химуро?