Kazana Island... A cozy, cool paradise where summer is everlasting. The protagonist steps foot on this island paradise as a transfer student, greeted by a mysteriously glittering sky, as well as the energetic island caretaker Ame, a girl-type AI. After a bit of a rocky start, he settles at the dorms where a handful of new female friendships await. She's a tomboyish beauty, but a bit of a loner: Himari Asamiya. The manifestation of brains and beauty, and also student leader: Hazuki Murasaki The self-proclaimed "Daughter of Darkness", with a normal side, too: Io Kouzuki Always trying to act mature, but still a tease (your cousin): Noeri Fujishiro And the girl whose duty it is to make everyone happy: Ame. How will you sculpt your everlasting happiness here in paradise? A new love is about to bloom...