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...?!
it will have brought us one step closer 
to proving our love, don't you think?
،سنكون قد اقتربنا خطوة من إثبات حبّنا
 ألا تعتقد ذلك؟
werden wir einen Schritt näher
am Beweis unserer Liebe sein!
estaremos más cerca
de probar nuestro amor, ¿no?
estaremos más cerca
de probar nuestro amor, ¿no?
on aura fait un grand pas
dans nos recherches.
saremo un passo più vicini a provare
il nostro amore, non credi anche tu?
estaremos um pouco mais próximos
de provar o amor, não é?
станем ближе к тому, 
чтобы доказать любовь.