Not really, he loves them ofc and helps them with their problems (abusive father if i remember correctly)... but deep down he still sees them as little girls which were his students. He likes them but since they are minors he doesn't want to cross that line. So he cares for them more like a guardian until they turn 18, and them marries them.
You got a really good point for the name, it is a bit misleading... As for the other girls, they get more involved then the twins actually. Like i wrote before, the bodyguard (think her name is Ichika, or something like that), is the best girl by far imo. I'm sure most ppl will agree on this after they see her in action... And you know, who doesn't like a sexy tomboy, right?
