The Kasugano twins lost their parents in a car accident. With no close relatives nearby, 16‑year‑old Haruka, acting like an adult, took responsibility for the remaining family – himself and his sister Sora. In the bitter but necessary struggles, the boy grew stronger, matured, and managed to cope somehow, but he began to seriously worry about Sora, who had been weak and ill since birth, which made her withdrawn and unfriendly. Living in the city was no longer an option, so Haruka decided: while matters of inheritance and guardianship were being worked out, he would move to the mountain village Okukosome‑te and stay in his late grandfather"s house, where they used to go on holidays often. It is easy to guess what awaited the kids in a village where people remember everything, forget nothing, and know everyone up to the seventh generation. The arrival of a city boy, who had turned from a familiar childhood friend into a handsome young man, mildly stirred the schoolgirls. Four girls immediately took a serious interest in him – the local "princess," the temple priestess, the neighbor on the street, and the class president. Of course he was not opposed to everyday interaction and rekindling old friendships. However, as he gradually relaxed his soul amid the unhurried village life, Haruka realized that he was not ready to admit that his relationship with his sister went far beyond ordinary…