Onegai☆Teacher, Onegai☆Twins Recommendations
Crossover in both appear Mizuho-sensei and other characters
It's basically a crossover of this series. It follows different characters but takes place in the same school.
The teacher and her young hubby make appearances as well.
This is set in the same town and share cross over story with it as well. Theres a new set of main characters with romantic problems just as bad as these two but there is a lack of aliens. It is mostly just teenagers who don't understand love yet. oh and a guy and his possibly little sister who might be his girlfriend eventually.
Anyway if your a fan of onegai teacher, onegai twins is almost exactly a like but i found it even better cause it was slightly more relate-able and not as far fetched in a way. Also in a way the characters