there's a good gang related kellic i found recently on ao3 called hell's angels. it's only on 3 chapters but the plot sounds interesting and some of her other fics are pretty good too. the author said that it's posted on her wattpad and her tumblr too though :)
“a day in the hood with few choices.”
kellin quinn runs clairemont academy. he’s had control over the whole school since he moved to london with his mother and his step-father 7 years ago at the tender age of 11. he decides what happens and when and he can ruin your reputation with the snap of a finger. so what happens when the stress of running the whole school gets too much?
vic fuentes runs hell’s angels, one of the most notorious gangs in london. they’re involved in drug trafficking, murders, robberies and even full-fledged heists. so what happens when a little emo kid who claims to run his school comes to him looking for a stress-relief?
“for the power they abuse the people.”