* spoilers *
I have to admit I stopped watching this until I could check if Eita really did return in the last episode. When I quickly searched the final part and saw that he was in it, I watched the final three episodes together. To be honest, it was a bit of a slog, and not really worth it in the end.
The final story concerns a murder that happened sixteen years ago, that caused the Lucky Seven detective agency to be founded. We discover that Eita's character has been working undercover on this case since he went missing back in episode three.
And the series ends as it began, with lots of fight scenes (this time, almost everyone gets to have a go) and there's also quite a lot of thoughtful reflecting, and realising who your friends really are, and other noble things, too.
But despite all the time and effort that has been spent on this show, it still didn't quite work. The gap without Eita was just too long, and the series could've lost a couple of episodes to speed things along. Or better, if Eita had left in episode five or six, to give the characters more time together before his mysterious disappearance.
But this series was okay, which seems like a very mean thing to say about a show that's clearly had a lot of work put into it. But Naka Riisa was underused, and some of the stories didn't make much sense, and all the pieces didn't quite fit together as I hoped they might.
Actually, I'm surprised by how little I have to say about this show. It was good, and then not so good but still okay, and then it ended.