You have only seven chances in your life.
Seven seconds each time.
Once they're used up, you disappear from everyone's memories.
Hoshino Shun has a secret: he can turn back time by seven seconds.
Seven seconds is too short to save his sister, who died in a signboard accident three years ago. It's not even enough time for anyone to notice that the world ever strayed from its course.
But he has no choice. He can use this power only seven times in his life.
On the seventh use, seven reversing stars will form the Big Dipper, granting him one true chance to rewrite the past. The price: becoming the eighth star and being forgotten by everyone he has ever loved.
Transfer student Kirisawa Mirai can see the future. She tells Shun that his sister's death was no accident. Someone caused it deliberately.
Who is the killer?
This is a story about seven seconds, seven chances, and seven stars.
About a loss you cannot undo, no matter how hard you try.
About a girl who uses forgetting to remember, and a boy who uses disappearing to stay by her side.
Seven seconds from now, will you still remember me?
