Here is my watchlist for sping 2018.
Anata ni wa kaeru ie ga aru (1 ep watched): I like matured dramas, but so far I could only watch one episode of this one, because it's "heavy". I should try ep. 2 soon.
Hanbun, aoi (asadora): it's really cute! If you like asadoras, go for it!
Headhunter (2 ep watched): I like Eguchi Yosuke, but the story is so-so.
Mikaiketsu no onna (2 ep watched): I don't really like, the cases are not really interesting, I will probably drop it.
Miss Devil (3 ep watched): honestly, I don't really like it, it's too much. But some parts are interesting.
Seigi no se (4 ep watched): this is one of my favorite! The cases are interesting, even if not impressive. And I really like the character played by Yasuda Ken.
Signal (4 ep watched): a lot of inconsistencies, but still pleasant to watch (because there is nothing very interesting this season).
Confidence Man (4 ep watched): this one is original, well-done, and the acting is really good! Nagasawa Masami is doing a fantastic job.
So, to sum up, if I had to recommend something it would be Seigi no se and Confidence Man.