When Himuro and Yukimura show up to their first date in their normal lab outfits disputing the arrival time within hundredths of a second, things seem destined to go pear-shaped from there. Fortunately, Kanade and Kousuke are there to observe, document, and course-correct, so Kanade helps Himuro pick out more suitable garb.
The two also have a data-collecting app with which they can tally various reactions during the date, from a racing heart to uncertain thoughts. Yukimura is almost ready to hit the latter button when Himuro appears in a cute outfit, whereupon he spams the former button.
Things go pretty smoothly from there, until Yukimura hesitates when the itinerary calls for them to hold hands. Himuro decides to wait for the bus while he settles up the bill, but she’s confronted by a pickup artist who was just caught two-timing his girlfriend and ended up with no one.
Himuro skillfully, hilariously rejects this guy like he’s never been rejected before, providing a damn PowerPoint—magically created for just this instance!—illustrating the reasons why she won’t accept his invitation. When he forces the issue, Yukimura steps in, takes her hand from the guy.
He then makes an impassioned speech about how neither he nor Himuro have time to waste on “animals who have abandoned all reason” and storms away. He worries he made an ass of himself, but Himuro is duly impressed.
Yukimura proves a scaredy-cat in all things amusement park ride, but obviously Himuro doesn’t mind whenever he takes her hand for support, and is afraid of a couple rides herself, culminating in the two huddling together on the Ferris Wheel. Yukimura presents the gift of earrings, chosen using a mathematical formula created just for that decision.
Himuro is touched, and when Yukimura apologizes if they didn’t meet the “base conditions of a date”, Himuro presents the data collected thus far indicating her happiness increased exponentially. Furthermore, even if this data isn’t sufficient to prove their hypothesis, it invites the collection of more data, ergo more dates in the future.