I watched so many AMVs of this when I was 5
The story is a little wack, the series is considered a joke in Japan, but for some reason the entirety of Finland fell in love with it in the 80s
Twins and their dog have to deal with people constantly coming to live in their house, and end up solving those people's kids' problems. People already live here! Well... kind of (book series)
Took me embarrassingly long to realize the janitor was Tailgate, and I'm still too sleep deprived to remember who's the theater kid and what the drugs are