🌸 Prologue🌸

Shidarezakura Heisuke, even today, is ever-interested in the world of swimming. However, ever since witnessing Matsuoka Rin's defeat by the hands of Nanase Haruka, and the reaction it caused upon the former, Heisuke has become a bit vary of competitive swimming. Not to mention, the drastic impact that Heisuke had witnessed upon her best friend, Haruka.
Heisuke hopes to have a normal high school career with her best friends, Haruka, Tachibana Makoto and not to mention, Hazuki Nagisa. But what will happen when their childhood friend Matsuoka Rin finally makes a return in Japan?