I'll be real with you. I still don't know how to feel about this manga. It's engaging, the artstyle is really good and the characters are interesting, but the pacing is really weird for me. It's definitely not an easy read, and it's right in the middle of "this is too much exposition" and being so interesting that you just want to keep reading. However, MPD Psycho starts shifting it's story away from what it was first set up to be. I'm not sure if it ends up being a wasted potential, but it does change as the story goes on. I'm sure that when itwas being published it was hype and people enjoyed it. I mean, it even got a TV miniseries directed by Takashi Miike of all people (though haven't watched that one yet). Yet now it has faded to obscurity, and I wish you good luck with finding the last chapters translated.

My recommendation would normally be to read something else since it's a bit long, difficult to access, and not action focused. But if you do decide to read it, if you're really searching for a mature detective mystery, you'll be met with good worldbuilding and artwork, cool characters and fun, interesting murder cases.

Once again though. Good luck finding a good translation.