Hiyori, whose late father had taught her the pleasures of fishing, had planned to spend some solitary time at sea. Little did she expect to come across another girl. But as fate would have it, Koharu and Hiyori ended up fishing and cooking together, forging a bond as they went along. In their brief acquaintance, Koharu sensed Hiyori's apprehension about meeting her new stepfamily that evening. It was an oddly coincidental situation as Koharu herself was in a similar position. Join these two newly found sisters as they take on a new journey together.