Splashed across a tabloid spread, “the sleepover incident” has created fresh and lingering tension between Kaguya and Miyuki, which should go without saying: it was a major step forward, even if it was utterly innocent. Still, neither is prepared to admit the incident for what it was, or their frustration with how it turned out, resulting in heightened passive aggression.
Things boil over when there’s only one slice of cake left (Yuu ate the second), leading to an epic, hour-long battle of wills with the two insisting the other eat it, even bringing up memories that make each of them have to turn away and blush about. The eventually come around to feeding each other simultaneously, but before they can do so Chika comes in to break it up, eat both bites, leading to a loss for both of them.
In the next segment, Kaguya seeks advice from Kashiwagi, while Miyuki goes to Yuu for advice on how to resolve the issue “for a friend.” Both tell their sides of the story, and each of their confidants is outraged by the injustice, leading to both Kaguya and Miyuki qualifying those events with other factors.
By the end of it, both Kashiwagi and Yuu agree (albeit quite independently) that if nothing happened and they both properly apologized, there is nothing left to be angry about. Of course, neither knows that the reason Kaguya is upset is that Miyuki didn’t even try to lay a finger on her.
Miyuki confronts her in the hall and says that he actually, did, but it was only one finger on her lips. Sufficiently satisfied (not to mention elated beyond belief), Kaguya returns the favor by touching his lips with her finger, making them even. This is how despite starting out in a state of tug-of-cake-carnage, both come out winners.
Now fully made up and back to normal, the term ends and Summer Vacation is about to begin. Both Kaguya and Miyuki are relying on Chika to use as a co-ed conduit to hanging out with each other without exposing how they feel (even though, if they’re honest, they already did that with the lip-touching).
Unfortunately for them, and as Kaguya quietly predicted, attempting to control Chika into getting your way is a lot tougher than you’d think. She’s off to Hawaii for a week in the Summer, and thus won’t have time for any other trip of that length, so she’s pretty much out. That’s when Yuu chimes in, wanting to make memories with his senpai.
That gives Miyuki an opening to suggest the end-of-Summer fireworks festival, which all four agree upon (Chika and Kaguya with particular enthusiasm). The only problem is, the August 24 date doesn’t work for Chika, who’ll be at a “tomato festival in Spain.”
No matter—Kaguya and Miyuki are committed to not wasting the vacation without ever hanging out with each other, and now they’ve found a new willing, and more malleable co-ed conduit to do so in Yuu. Could such a scenario provide the necessary conditions for either of them to move past feverish bed-sharing and coy lip-touching? We will see…