Wild Male Lead

I just saw the first episode of Prince of Wolf and I loved it and I need more! Another example would be Juken Sentai Gekiranger!

Looking for a drama where the male lead has lived in the wilderness/otherworld/past and needs to come accustom to the 'modern' world. Or any where the male lead is wild is good (i.e. loses himself when fighting and need to be held back at times)!

Thanks in advance!!!

Not a drama, but you'd probably really like A Werewolf Boy. 

I want more of these type of dramas also, I'm really enjoying Prince of Wolf! I don't know of many though unfortunately :(

A few leads who occasionally lose themselves to violence or dangerous urges:
Holy Land
Blade Man
Mars
Ruk Mai Mee Wun Tay
Swords of Legends
Brain Man
Ouroboros
Beautiful Mind