In the Nanahama High School Aquarium Club, Koyuki and Konatsu meet. The 'salamander' that once connected the two has become something undeniably special for Koyuki and Konatsu, even amidst the changing days. As autumn approaches and Koyuki's graduation draws near, the cultural festival is held at Nanahama High School. In an effort to confirm their feelings for each other, Konatsu musters her courage once more to address her final question. The story of the two begins to walk towards their respective futures, and then――. The hit girls' ship story finally reaches its conclusion! ★ The special electronic edition includes bonus elements such as illustrations from bookstore exclusives for volumes 6 to 8 of the paperback edition!