where can i learn a martial art that focuses on bone breaking techniques?

[matalicarules]

ok im currently takeing tang soo do and a cage fighting class im wondering where can i learn koppojutsu or some martial art that primarly focuses on bone breaking im looking for a martial art that is in terms as destructive as humanly possible i know several breaking techniques but i want more (im currently 15 and in the 8th grade) so that means i have 4-5 years to studie befor i join the rangers ive always had a love for martial arts and sparring and im a yellow belt at the moment im going to try to achive a black belt in atleast 2 years but i want to learn more harder arts (im not a violent person i hate fighting) otherwise my instructor wouldent be teaching me now xD but anyways any help you could give or locations of dojos that teach harder arts and will still be teaching in a year or 2