21 Emon Uchuu e Irasshai!
Genres: Comedy, Sci-Fi
Type: Movie, Episodes: 1
Aired: Aug 1, 1981
Studio: Shin-Ei Animation
Source: Unknown
Rating: G - All Ages
Synopsis:
The story tells the adventures of the boy, 21 emon, engaged in the management of a hotel belonging to his family for years. In his problems, 21 emons is helped by the robot Gonsuke and the little alien Monga.

(Source: Wikipedia)