Popotan
12 episodes
Secret House
A young boy named Daichi is trying to photograph ghosts when he happens upon a mysterious house.
Friends
Because their house travels through time, Mai always has to leave friends behind. This has caused her to normally keep her distance from others, but then she meets Konami in high school.
Magic
Mii decides she wants to cosplay as a magical girl and go around helping people, which leads to her meeting a sickly girl named Miyuki.
All Alone
Alone in the mansion's Christmas shop, Mea meets a mysterious girl who insists that Mea fixes her doll. Shortly thereafter, however, the girl vanishes, and soon so do the three sisters.
Hot Springs
Appearing at the construction site of an amusement park, Ai encounters a dandelion that knows where to find Shizuku, the girl they've been searching for.
I'm Home
The mansion returns to the amusement park five years later where Mai has a reunion with her sisters.
Things I Can't Say
It's been thirty years since Daichi encountered the three sisters, and after seeing their mansion in a photograph of his daughter he goes searching for them.
Christmas
Appearing at a Shinto shrine, Mii meets Nono, a devout priestess in training. Nono loves Christmas but her grandfather dislikes all non-Shinto ways and beliefs.
Once more
Returning to the city where Mai met Konami forty years earlier, Mai mistakes her daughter, also called Mai, for Konami and tries to befriend her.
Gift
Mai is distraught after what happened with Konami and tries to destroy the portrait they drew together but Mea intervenes.
Farewell
Keith leads the three sisters to Shizuku, finally ending their long search. Weary from the constant traveling and losing friends made along they way, they ask her to let them each return to Daichi, Konami, and Nono respectively.
Popotan
Mai, the now grown-up daughter of Konami, is telling a curious Daisuke, the youngest child of Daichi, about the three time traveling sisters.