When Hiyori⁠—a young girl whose deceased father taught her the joys of fishing⁠—headed out to sea for some alone time, she never thought that she would encounter another girl there. After a while, this girl⁠—named Koharu⁠—and her end up fishing and cooking together, and they get to know each other a bit in the meantime. During their brief time together Koharu finds out that the reason Hiyori went out to sea that day...