 If you liked
Beelzebub
|
 ...then you might like
Gang King
|
Both of these manga revolve around a young delinquent and as the story progresses, both end up gaining more and more gang members slowly, as of course, they prove their worth against a 'rival' of some sorts because of their reputation. What sets them apart is that Beelzebub is a shounen about young Oda babysitting the demon kings son, so is rather supernatural based, where as Gang King is a seinen about a wannabe tattoo artist but it shares the same rather crude humour.