This live action TV series is based (like so many) on a Japanese manga series. I can't compare the TV series I watched to the manga itself. But both have the theme of the lonely being able to rent out dads, children, ... and girlfriends.

So the hero is a student wimp who resorts to renting a girlfriend after being dumped to preserve face. But gets more than he bargained for as she's not only also a student in the same university but also lives next door!

There may be familiar themes and happenings - the males are mostly incompetent, the females are apparently assured and able. But it flows sweetly and gracefully and amusingly. I liked it because the world isn't under threat, there aren't soap opera revelations, it's a comedy of manners.