 If you liked
Jormungand
|
 ...then you might like
Kimi no Knife
|
Both series has a similar feeling that deals with a realistic and dangerous job that often puts the main characters' lives at risk.
Both series' main protagonist are cunning and often plans their moves ahead in order to accomplish tasks assigned. The tasks are sometimes considered controversial and not legal by public standards. Of course, they do come with great rewards.
Both series has action, drama, and gives off a seinen feeling.