Nishikata may not be able to fully appreciate it because of all the stress he assigns to his interactions with Takagi, but he’s having the best summer vacation of his life. And he’s simply not being honest with himself if he privately enjoys manga like 100% Unrequited Love but can’t see the requited love right in front of his face. When Takagi leaves her mom’s side at the mall to buy a bathing suit, her first thought is what kind would Nishikata like?
She doesn’t have to see Nishikata buy the latest volume of 100%, since he’s already established he’s a fan of it. She plows through all of his lame obfuscating and happily takes the bet that what she believes he bought is what he actually bought. Not sure what he was going for with his futile bluff; he should know by now he simply can’t fool Takagi. He’s “punished” by being “forced” to pick out a swimsuit with her.
Now I get it; Nishikata’s right in that awkward phase between thinking girls have cooties and actually liking them. Those conflicting feelings are constantly swirling chaotically, while Takagi is an island of tranquility. He can’t hide his embarrassment at the situation, but she lets him call it “being hot”—as long as he helps her pick out a bathing suit she looks good in.
Nishikata is simultaneously thrilled at the prospect that Takagi is a mere few feet away from him removing her clothes, but also terrified of being seen, worried about what his classmates might think. Well, two of his classmates actually do appear, but they’re a couple, and they’re there for the exact same reason he and Takagi are there.
Finally, Takagi takes advantage of Nishikata’s automatic “yeahs” in response to the suits she shows him by slipping in a swimming date proposal, knowing once he says “yeah”, he won’t go back on that “yeah,” because going swimming with her is hardly the end of the world.
After the girl trio heads to the beach, we’re back with Nishikata and Takagi, and the latter proposes they do some of their summer homework together. The most logical place to do it turns out to be Nishikata’s house, and suddenly, like some kind of surreal dream, Takagi is in his house, in his room, and doing homework on his bed.
While watching the lovely Takagi right beside him writing lovely kanji, Nishikata makes a mistake in his book and reaches for the eraser…at the same time she does. Their hands touch and linger. He’s reminded of an identical scene in 100% where the guy doesn’t let go and draws the girl in for a kiss…but he is currently incapable of doing such a thing, preferring to live through that guy vicariously (or maybe he relates more with the girl?)
In any case, while Takagi’s visit is stressful as all interactions with her are, he doesn’t not enjoy himself, and when she leaves for the day, saying she’ll be back soon, he decides it’s only proper to clean his room for that future occasion. Maybe, just maybe, Nishikata is getting into the swing of things.