Ayame confesses her feelings to Shinya; however, because neither of them have any experience with romance, they decide to discover the standard conditions of love so that they can judge each other's feelings by them.

To find proof as to whether he is in love or not, Yukimura pats Himuro on the head; seeing this, Ibarada, an upperclassman in the Ikeda Lab, points out the need for a control experiment.

As Yukimura and Himuro endlessly debate love using numbers, Kanade proposes that the two of them go on a date.

Yukimura and Himuro wear monitoring equipment and lab coats for their date and task Kanade with recording observations.

When the members of the Ikeda lab gather to announce research findings, Yukimura and Himuro give a joint presentation on the results from their date.

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.