 If you liked
Koroshi Ai
|
 ...then you might like
Raise wa Tanin ga Ii
|
Romance anime involving assassins or organizations, little bit dark-ish elements and adult cast. Life and death situations
Only one episode has been released of Yakuza Wife when I'm writing this but this was the first anime that came to my mind. Koroshi Ai is from "not that famous" studio so everything does not look flashy and brilliant but if you are just looking for good spicy love story between two characters while dodging bullets, this is a one to check out!