A level walkthrough for getting S rank on Hard difficulty for Level 12 – Y Island for Streets of Rage 4.
So, Mr Y and Ms Y are the children of Mr X, right? Which means that Mr X found a Miss Y and they had a strong enough relationship that she had his kids, but was independent enough as a woman that not only kept her own name, but passed it on to her kids.
Mr X might be a syndicate boss, but Miss Y is the true power in that relationship.