Same feeling here.
Somehow the introduction with a late teenager becoming a pseudo-second rate here was nice. Even his relation with an average cop and all was fine.
Also, there was no fantasy or superpowers, but messages were delivered and it managed to be a nice watch.
Then, the annoying Maya came and I started to gripe a little.
They totally ruined it with the KT arc. Somehow, it's like they decided to throw away the core values of the show and made it something quite appalling.