A thirteen-year-old girl gains a much more sympathetic understanding of her relationship with her mother when she has to spend a day in her mother's body.

The Kobayashi twins, Megumu and Mitsuru, were named after historical figures, but only Megumu has grown up with a taste for history. So when Mitsuru is in danger of losing his weekends to extra history classes, he convinces his sister to swap clothes with him and ace his tests! After all, how hard can it be for them to play each other? Azusa Tokugawa was a horrible bully until Mitsuru Kobayashi helped her tame her rage. Now her tender feelings for...