When Sachi’s fever doesn’t go down, her mom takes her to the hospital, but Sachi insists they don’t tell Onii. When Erika hesitates to tell Nagi what she wanted to say, he scares her from the bushes, and she reveals that she’s been going commando. After purchasing some underwear at a nearby konbini, they complete the test of courage by arriving at a shrine.
There, the two have a really sweet moment, with Erika saying she’s glad she met Nagi, and Nagi concurring. He also wishes things “stay this way”, which Erika not wrongly asks him to elaborate. By “this way”, does he mean the two of them remaining engaged? On that note, Hiro learns the shrine is a marriage shrine, so she and Shion forfeit.
Dinner is finally addressed after the test, and it turns out Erika did buy enough ingredients for an eclectic barbecue. While Hiro missed out on being with Nagi for the test of courage, she still sneaks in an indirect kiss by eating Nagi’s ear of grilled corn (which is the best corn).
Once they’ve done everything else one can do at a study camp, the group considers actually studying, but Nagi surprises them all by suggesting they stargaze instead. Turns out he quickly agreed to the camp because the Capricornid meteor shower would be visible in Karuizawa the night they were there.
Everyone has a great time, but then Nagi gets a text from his mom saying Sachi’s in the hospital, and he catches the last train back home to visit her. She calls him an idiot for ditching his first camp with friends, but also thanks him for being there for her.
The next day Nagi regrets so impulsively ditching the others to see Sachi. While Erika says it’s “fantastic” that he has “someone to rally to” like that, both he and I sensed a little tinge of resentment in her words, as if she should be (and likely is) the same kind of “someone” to Nagi.
That’s doubly true if the truth of the past is that Nagi and Erika grew up together, at least for a couple of years. We learn that Hiro got a look at the photo, which Erika’s dad left in the vacation house as a kind of “bomb”. In doing so, he probably signals that he wants Erika and Nagi to quit reveling in their cozy little limbo and actually start to make some choices.
And it works! Hiro doesn’t know what to make of it, but I’m sure she’s eager to learn more, and considers an alliance with Shion so she can end up with Nagi (a plan probably doomed to failure). Then, in a gorgeously lit scene at the pool, Erika and Nagi exchange some splashes, Nagi makes it clear he wants to know the identity person Erika wants to contact—whom he assumes is someone to her who Sachi is to him.
When he splashes him again, it’s almost signaling that it’s him, and asks him solemnly if he’s truly prepared for what she’s going to say. If that person is Nagi, like I’m assuming and who seems to be the natural choice, and Nagi learns this for certain, the narrative momentum is poised to pick up fast.