But, they seem more thug-ish than most criminals.....
Sakuya just like the right hand woman of a big name yakuza boss.
Sanae are idol, Kanako the manager & Suwako the agency.
That's kinda why I said she's a hardboiled cop. Her edge are rough so her way is rough and merciless.
And if you're talking Idol, isn't Mystia the Lorelei more fit? You know, as the singer that make the men blind.
I don't have problem with Sakuya, though the boss is more Mafia than Yakuza...
Edit:And when you think about it, Suika is that drunkard who managed to not die yet due to being a drunk-fu master.