If you liked
Un-Go
|
...then you might like
Subete ga F ni Naru
|
While having very different plots and characters, The Perfect Insider drew me in just as quickly as UN-GO. Both are wrapped in mystery, and while UN-GO holds a more interesting, supernatural element - both keep you on your toes and make you try to solve the mystery yourself. UN-GO has many mysteries in one show and the Perfect Insider mainly focuses on one, but that one mystery gets more complex with every episode. I agree that both can have a slow start but they are both nonetheless intriguing and leave me desiring more mystery.
If you liked
Shingeki no Kyojin
|
...then you might like
Koutetsujou no Kabaneri
|
It's the same concept of an enemy that threatens humanity, this time it's zombies. The main character of both have special abilities that make them a better fighter and their determination to wipe out the enemy is what drives them. Both are good, but Kabaneri won't hold the same satisfaction if you have already seen SNK.