Atashin'chi Movie
Genres: Comedy
Type: Movie, Episodes: 1
Aired: Dec 6, 2003
Studio: Toei Animation
Source: Unknown
Rating: G - All Ages
Synopsis:
In a stormy night, Mikan and Mom were stricken by lightning simultaneously and switched bodies. In the following days, while Mom enjoyed being a student again, Mikan had to fought with house chores. Meanwhile, Yuzuhiko and Dad were busy looking for a way to switch them back.

(Source: ANN)