How I Bought an Asteroid over the Internet
Valkyrie accidentally buys an asteroid over the internet in Kazutos name; therefore the order can not be canceled. This means Kazuto would have to sell the bathhouse.
Aired 05/09/2002EP 10 - How I Bought an Asteroid over the Internet
2002
UFO Ultramaiden Valkyrie
UFO Princess Warukyure, aka UFO Princess Walkyrie is about a princess from outer space who accidentally crashes on earth, where Kazuto desperately tries to maintain the public bath of his grandfather. Due to circumstances, Kazuto receives part of princess Walkyrie's soul which forces her to stay there with him. But that's not the only problem ... because her soul lost strength, the princess transforms both mentally and physically into a little kid!
(Source: AniDB)