It's the end of spring when all trees are at their most greenest moment, the ocean are blue and stuffs and it's the start of summer. The protagonist goes to an academy called Aoigaoka(or Aogaoka) Gakuen. Along with his childhood friend Mio and his best friend Masashi. But there is something different this summer, the protagonist will encounter many people and it will change him. He will eventually find his "important thing" that can not be seen by eyes.

....The summer of love is starting.....