Kokonatsu, who transferred from a city high school to Nanahama High School in a seaside rural town, struggled to fit in with her surroundings. During this time, she meets Koyuki, a member of the Nanahama High School Aquarium Club. Drawn together by the loneliness they both carry, what will happen between the two? The electronic special edition includes 10 pages of newly drawn illustrations and comics by the author, Makoto Haginou, who updates on Twitter!