Shiro is going to keep an ear out and see what the locals have to say. He's all about assisting other people...but he doesn't want to act unless he feels he should. He's skeptical of Astoria. Even if he wasn't...this sounds like a situation that could explode if it isn't handled right.

He's going to explore, gather information, and see if he can't land another security kind of job. It worked well for him last time. Can't hurt to do it again. He'll try to avoid the fighting ring but chances are he'll be in it if a lead takes him that way.