Hi. Can't remember title of this manga. The story is basically about a Martial art master who was crippled by his father. Basically he can only fight at 50% of his ability before his father did something to him. A lot of his former apprentices want him to train them due to some group/gang related issues at school. 2 of the people who want training are teacher at this school. lol He ends of sleeping with one of them early in the manga, some blonde haired chick who likes to use guns. ... I hope this jars some one's memory. I appreciate if you can direct me to the right manga.
________________ "It is those who know little, and not those who know much, who so positively assert that this or that problem will never be solved by science."