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...?!
The value of quietness would 
become negative infinity.
.ستصبح قيمة الصمت ناقص ما لا نهاية
Dann wäre der Wert
von Ruhe unendlich negativ.
el valor de tranquilidad
se hace negativo infinito.
el valor de tranquilidad
se vuelve negativo infinito.
… la valeur de calme
deviendra infiniment négative.
il valore di tranquillità tenderebbe all'infinito negativo.
...o valor de quietude
tenderá ao infinito negativo.
Значение параметра «тишины» 
уйдёт в минус.