The main character, Kotarou, returns to his hometown of Usahina for the first time in several years. There, in this sea-side town, he reunites with two girls from his childhood.
A mermaid-like girl, with a shy and timid personality, "Hinata". A princess-like girl, with a strong and dominant personality "Tsubasa".
Loved by both of them, who will he choose? Drown into the vortex of a distorted love triangle...
