Well, this is interesting. A story about two conflicting characters where one of the characters suddenly leaves. I've just watched episode six, and it's been three episodes since Eita's been a central character after he went on the run from the police and then left the company. Of course, the story's been set up so that a return is likely, but while he's away, this show is sorely lacking its central theme.
Not that the show is particularly bad, but the cracks are beginning to show. Matsumoto Jun doesn't have anyone to play against without Eita, and any hope that Naka Riisa might fill that role hasn't been fulfilled. Most of the time, she's carrying around a small dog which kind of limits her involvement.
So, as it stands, we've got a drama in search of a finale. It's as if the series is waiting for Eita to return (and it would be a shame if he didn't) and until that happens, here's some stories to fill the time.