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...?!
If the noise level exceeds 70 decibels, 
the mood plummets drastically!
،إن تعدّى مستوى الضجيج 70 ديسيبل
 !فسينخفض المزاد بشكل جذريّ
Wenn das Lärmniveau 70 Dezibel übersteigt,
stürzt die Stimmung drastisch ab!
¡Si el ruido supera los 70 decibelios,
el ambiente baja drásticamente!
Si el ruido supera los 70 decibelios,
el ambiente baja drásticamente.
Se il livello di rumore supera i 70 decibel,
l'atmosfera precipita drasticamente!
Se o ruído passar de 70 decibéis,
o clima cai drasticamente!
Если уровень шума превысит 70 децибел, 
атмосфера будет испорчена!