Merging gangs is always going to be chaotic...There will be fights and disagreements over territories and who takes orders from whom, there's really no avoiding it...Ran ignores the chaos and just goes back to focusing on you...

He and his brother chose to merge their gang with yours for a reason...Not only do you have a hell of a lot more territory but you also have every single one of your members under your complete control...You're intimidating and intense, and he absolutely loves it...