A sudden fever keeps Koyuki from participating at the Aquarium Club open house during the Nanahama High School culture festival. After a successful solo amberjack show, Konatsu stops by to wish Koyuki well and teasingly compares her to the salamander from a short story. Now Koyuki can’t stop thinking about how Konatsu once compared herself to the frog from that story. As school obligations keep them apart, Koyuki and Konatsu start to realize just how important they are to each other. -- VIZ Media

Konatsu is doing her best to adapt to her new school, but being required to join a club has introduced additional pressures. Her friendly classmate Kaede invites her to join the Home Ec Club, but Konatsu hasn’t even had time to consider which club she’s interested in. Meanwhile, Koyuki is like a ray of sunshine in Konatsu’s cloudy world. Will Konatsu join the Aquarium Club? -- VIZ Media

The Aquarium Club is finally coming alive after welcoming new members, but summer is nearing and Koyuki has started studying hard for exams. Working up her resolve, Koyuki invites Konatsu on a moonlit walk on the beach where she bares her heart about an important choice. Graduation is approaching and the time they have left together is more precious than ever, but how does Konatsu respond to hearing Koyuki’s decision? -- VIZ Media

Koyuki and Konatsu, each lonely in her own way, are the only two members of the Nanahama High School Aquarium Club. As they spend time together, they discover that they are increasingly drawn to each other. When they go to the town summer festival together, Konatsu is finally able to ask why Koyuki spoke to her that first day at the aquarium open house. But Koyuki doesn’t have an easy answer, and her stumbling reply makes the mood uncomfortable. Will this new awkwardness force a distance between them? -- VIZ Media

Even though life is changing for Koyuki and Konatsu, the Aquarium Club and the little salamander that brought them together will remain a special, immutable link between them in the days ahead. As autumn arrives and Koyuki’s graduation looms, Konatsu summons all her courage to confront one lingering doubt—must their friendship end just because their stories are diverging? -- VIZ Media

It’s getting harder for Miwa and Saeko to ignore the tensions in their relationship as even their sex life starts to suffer. Saeko begins to feel like Miwa doesn’t really see her while Miwa finds herself dwelling more and more on the past. They don’t want to give up on each other, but what do you do when a relationship starts to sour? -- VIZ Media