Ah, the mountains, where the weather can change on a dime…and compromising situations can come just as quickly! The whole class has arrived at a mountain retreat for two days of intensive study, but the thing Rizu seems to be studying more intensively than anything is Nariyuki’s face.
Rizu has probably never been in love, so isn’t sure what to do with the strange mix of emotions she feels whenever she looks at Nariyuki , and in the process of trying to figure them out, she just keeps starting.
In this high-stakes environment, even lending Nariyuki an eraser is an intense competition, with Fumino beating a hesitating Rizu, Nariyuki fumbling, and Uruka passing it to him under the desk—where her legs aren’t crossed. None of this is intentional, but that doesn’t change the fact it’s happening to Nariyuki .
Increasingly embarrassed over her reactions to his presence, Rizu lashes out and runs out for some air, breaking the rules. Once she’s calmed down, she starts collecting mountain udo as an apology, but is so into it she gets lost in the woods as a mountain rainstorm commences. When Sekijo Sawako asks Nariyuki where the hell Rizu is, he realizes she could still be out there.
Using flash cards she surreptitiously dropped, he manages to find her, just as she’s visualizing the mathematically highly unlikely possibility of him doing just that. The problem is, she’s on higher ground and has to come down. That results in her slipping and falling. As she falls, Nariyuki positions himself to catch her, and the their lips end up meeting. As his rice bowl cracks back home, Nariyuki wonders: was that his first kiss?
He gets neither clarity nor assurance from Rizu, who continues to avoid his face as they carry out their punishment for leaving school grounds: cleaning the girl’s bath. Unfortunately, Rizu neglected to hang the “cleaning in progress sign” on the door, so all the girls, including Fumino, Uruka, and Sawako, strip down and rush in before Rizu can stop them.
Rizu confidently declares she’ll take care of it, but immediately fails, is stripped down herself, and forced into a battle of endurance in the very sauna where Nariyuki went to hide. Uruka (surprisingly) is the first to give up, but Fumino’s in it for the long run. Meanwhile Nariyuki is past his limit…
He’s saved by an unlikely heroine: Sawako, who put together the fact that he and Rizu were cleaning the bath and he got caught in a situation not of his making. In exchange being in her debt, Sawako distracts the others so he can slip out.
But as he opens the door to complete his escape, Uruka is there, and the force of the door opening whips her towel clean off, revealing every bit of her non-tanned body. Fortunately for Nariyuki, Uruka is still so woozy from the sauna she assumes she was hallucinating the guy she’s into!
Rizu apologizes properly for putting Nariyuki in so much danger—to be caught peeping in the girls’ bath would probably torpedo his chances of VIP consideration—and they finally address the accidental kiss they both agree was not a real kiss, but an accident. When Rizu tries to ask if Nariyuki “saw anything” in the bath, he assures her his glasses were foggy, something another glasses-wearer might understand.
Back at school, Nariyuki is brought before Kirisu-sensei, Rizu and Fumino’s former tutor who the later described as “very…cold.” Indeed, Kirisu treats their meeting more like an FBI interrogation, and after he tells her he’s doing his best to improve their grades, she immediately brings up the incident of him accidentally kissing Rizu in the forest, something only he and Rizu should know about, but somehow she knows too!
Whether her motives involve ensuring Nariyuki fails to do what she failed to do with her cold methodology, are couched in some kind of repressed feelings for him (this is a harem rom-com), or she just wants Rizu and Fumino to give up on subjects contrary to their talents, Kurisu is poised to emerge as the single greatest threat to everyone else’s success and happiness.