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...?!
Kissing somewhere with a nice mood 
like that is what gives it meaning!
!تقبيل شخصٍ ما بمزاج صحيح هو ما يجعل الأمر ذو معنى
Die Stimmung gibt einem Kuss
doch erst seine Bedeutung!
Besarse en un lugar con un buen
ambiente es lo que le da sentido.
Besarse con el ambiente adecuado
es lo que le da sentido.
C’est le cadre
qui donne un sens au baiser.
Baciare qualcuno con una bella atmosfera
è ciò che gli dà significato!
Beijar num lugar com o
clima certo é mais importante!
Смысл в том, для поцелуев нужна 
подходящая атмосфера!