As a crazed fan of both Teacher and Twins, I think Teacher was a better piece. At least in Teacher, they give nearly everyone some degree of serious character development. In Twins, I really don't like how Matagu is demoted to something so worthless as that, and as for the interesting new addition of his sister, she's also completely ignored. The show's focus around the twins and Maiku, in my opinion, didn't really work either. All we get is a whiny repetition of "We might be related ... we might not be related", followed by a discovery that
Spoiler:
KAREN is the related one!? I find that quite disappointing. If they were going to pick at all, they should've picked the one that was more likely to put up a fight. Picking out meek Karen, who would submit to Miina without a peep was the cheap, easy way out. Or better yet, it might've also been interesting to have all three of them be related. It's quite a very, very big cliche how whenever two people who are related fall in love with each other, it ALWAYS turns out that they're actually not related. It would've been a very huge risk, but exploring the conflicting feelings of "No, we're related" "But I love you so much" clash against each other in a situation where the concerned parties actually are related.
Very disappointingly, however, the show takes the easy way out.
So, both Onegai Teacher and Onegai Twins weren't truly brilliant pieces, but Teacher was a bit better done. On an unrelated note, however, I like the music better in Twins.
