Hey guys, 
I'm searching for a kind of Gangster-Drama like Inspiring Generation or Cruel Romance where the female lead doen't look pathetic, when she is on a mission or fights or even discuss strategies. I'm looking for a heroine which really is one but also a strong male lead character who appreciates her for that.
     
Here my favorite heroines from different genres:
       
Heroines I loved

Kim Hang Ah (The Kings2Heart)
Bai Ping Ting (General and I)
Kim Na Na (City Hunter)
     
Heroines I liked

Ko Yoon Jung (Mrs. Cop 2)
Bai Qian (Ten Miles of Peach Blossoms)
Thank you!
Angry Mom
Bring It On, Ghost
Empress Ki
Dong Yi
Legend of Lu Zhen
Mask
When A Snail Falls in Love
Who Are You (2013)


These dramas all have great FLs (imho) and a decent amount of action/strategic thinking, but I don't think any fall under the "gangster" genre (but royalty is kind of like the mob...). I haven't watched Yoona's Street yet, but that might fit the gangster theme.  
i think The Guardians/Lookout might suit your taste. The main female lead is a former policewoman on a run trying to get a revenge on bad guys. It is not a historical drama but main character in this is /very/ badass and with a set goal. It has both - strong female and strong male characters who have their strong and weak points. (there is no romance between main leads, if you are looking for that, though)
Thank you! I'll check it out :D
Stranger/Secret forest