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 it's loud, the mood value drops 
to negative infinity, bear!
إن كان المكان صاخبًا فستنقص قيمة المزاج
 !إلى ناقص ما لا نهاية، دبّ
Wenn’s zu laut ist,
fällt der Wert ins Bodenlose. Gwar!
¡Si es ruidoso, el valor de ambiente
baja a negativo infinito!
¡Si hay ruido, el valor del ambiente
baja a negativo infinito!
si c’est trop bruyant,
le score baisse à l’infini !
Se c'è rumore il valore di atmosfera
tende all'infinito negativo, orso!
quando fica barulhento, o valor do
clima cai pra negativo infinito!
Из-за шума индекс атмосферы 
может уйти в минус, мишка!