After summer vacation ends, a high school girl who sometimes sees things she shouldn't begins to encounter the supernatural. She just wants to keep living her ordinary life, with the occasional ghost sighting, and likes to make snarky remarks to herself. But little by little, she comes into contact with things ordinary people should never know about. Her childhood friend, who attempted suicide and then disappeared; her first love, who left without a word; and a series of events triggered by the blue coat her older brother left behind: everything is drawing her into that world.
A man dressed in black appears before her. They should be meeting for the first time, but he tells her they've known each other since before summer vacation?!
This is the story of an ordinary girl whose worldview is forcibly shattered.
