A magic stone swaps two women's ages, then quietly refuses to undo it. What follows isn't a race to fix the wish, it's two people learning that the life you wanted and the life you need are almost never the same thing. The show moves slow enough that you feel the weight of every decision, every conversation where neither of them can say what they actually mean. By the end, you're not watching a supernatural premise resolve. You're watching two people choose who they want to become.

Karada, a cheerful girl about to start junior high, hates nothing more than being treated like a child. When a mysterious wishing stone at a roadside shrine actually listens, it doesn't grant her request cleanly. Instead, it ages Karada up by stealing years from Shoko, her older brother's ex-girlfriend, and now both girls are stuck in an impossible situation. Karada suddenly has to face what being an adult really involves. Shoko, meanwhile, is sent backward to Karada's age, on the verge of junior high again after already graduating and studying overseas. With their ages reversed, the two must deal with their existing romantic interests and come to terms with each other, and eventually with themselves. The series blends supernatural fantasy with slice of life drama.