Summary

15 year old, Otawa Ryuuichi, decides to train in karate after being dumped by a girl who only liked strong guys.

Download:
http://www.mangashare.com/manga/Full-Contact
Read Online:
http://www.onemanga.com/Full_Contact/

I like this manga, has a similar air to History's Strongest Disciple Kenichi, though it is a bit more ecchi (i guess), yet u should read it(if u haven't) and decide if u like it lets know