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...?!
Why is there so much variation 
when the action is the same?
لماذا هنالك اختلاف كبير رغم أنّ الفعل هو نفسه؟
Warum variiert derselbe Akt derart stark?
¿Por qué hay tanta diferencia
con la misma acción?
¿Por qué hay tanta diferencia
con la misma acción?
Une telle différence
pour la même action…
Perché c'è così tanta disparità quando l'azione è la stessa?
Por que há tanta variação,
se a ação é a mesma?
Почему такая разница, 
раз действия одинаковые?