I want to watch a good revenge Drama. Can you recommend me a good drama (Korea,Japan) ?

I mostly watch Korean dramas and the ones that come to mind are :

Bad Guy starring the extremely talented Kim Nam Gil (I know it had some bad reviews but I personally really liked it and the OST is great.) + Innocent Man with the gorgeous Song Joong Ki.


Worth mentioning may also be Queen of Ambition. I recently came across a MV of the OST and then read some of the comments and reviews. It sounds good, has a great cast and hence has gone on my plan to watch list.


Gap Dong, Zeni Geba, Gakkou no Kaidan, Kurosagi, Yong Pal, Angry Mom maybe?... I enjoyed these :)
The devil (korean version) Maou (japanese version^^), a love to kill, heartless city
Bad Guys (kdrama)
City Hunter (kdrama)
Iljimae (period kdrama)
Kurosagi (jdrama)
Strongest Chil Woo (period kdrama)
Yaksha (period kdrama)
dramas:
the princess man (recommend this one the most)
innocent man
missing you 
scholar who walks the night (even though it's supposed to be about revenge it became more of a love story and well, the main line has a lot of plotholes. Even though it's a great watch I wouldn't really recommend it if you really want a good revenge story. I'm still naming it though)

movies:
don't cry, mommy