Living for the Day After Tomorrow (Asatte no Houkou) is a manga by J-ta Yamada which ran in Comic Blade Masamune from 2005 to 2007. It received an anime adaptation in 2006.
Iokawa Karada is a little girl who lives with her older sort-of brother, Hiro. Nogami Shouko is Hiro's ex-girlfriend, whom he unexpectedly left behind. When Shouko is unexpectedly reunited with Hiro, the girls come into conflict, leading to hurt feelings all around. Still upset, they both find themselves together at a small shrine housing a stone that, according to local legend, will grant wishes.
They didn't expect it to actually work. Karada is suddenly now an adult, and Shouko is a child. Suddenly nobody recognizes them, they don't have any clothes that fit (Shouko even needs new glasses), and Karada has to deal with being an adult, all while Hiro and friends are in a panic about Karada's sudden "disappearance."
This series provides examples of:
- Bait-and-Switch Credits: Mild: the opening and ending credits focus almost entirely on child Karada, who appears almost exclusively in flashbacks after the first episode.
- Immortality: In the manga, Kikuko intends to use the wishing stones to live forever.
- Interrupted Declaration of Love: Early on, Amino tries to confess his love to Karada, but is interrupted by Hiro. Their relationship goes downhill from there.
- Magic Pants: Averted; after having their ages switched Karada and Shoukou are wearing clothes way too small/big for them respectively.
- Magic Realism: It's a perfectly normal world, except for the wishing stone.
- Physical Attribute Swap: The characters switch ages to learn more about themselves, not to learn more about each other.
- Promotion to Parent: All the way up from, in the anime indirectly related total stranger, and in the manga total stranger who is probably her father.
- Rape as Drama: In the manga Tetsu forces Karada to give him a hand job and clearly believes that he's doing it out of love, later on he realizes he was very very wrong and spends the rest of the manga trying to find another wishing stone in hopes that he'll get to see her smile again.
- Three Wishes: Subverted, in the manga a sign at the shrine says the stone grants three wishes, it actually only grants one wish.
- Uncanny Family Resemblance: Faked—Shouko pretends to be her own little sister, played straight in the manga with Karada and her mother.