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I want a story like city hunter where the male mc is taken away from his hometown and comes back 20 years later ready to take revenge against those who did stuff to his family. Would like it to be modern setting no past or historical setting.Would like to be the mc to be good at fighting as well as the story to have some romance.

the incarnation of money 
W - two worlds 
Healer 
K2 
they all have that kind of vibe ish
+1 for Ryusei no kizuna
Time between dog and wolf! 
Goodbye Mr. Black
Green Rose

Ouroboros
Monster (http://mydramalist.com/16419-monster)
Hotel King
Cruel City
I Remember You (2nd male lead)

doctor stranger - not a fighter but a doctor, but still a revenge plot

Nirvana in Fire!!!