Mafia 30. Yakuza Clans war.

But where is the option with a regular Yakuza? It's so simple that it almost seems like a defense.

I didn't consider it because even if Ple-Sen skipped his turn, someone else would have killed him instead. But there were no kills. Unless Morning was sent to kill, or the ill-fated Elephant.

Why only the ninja is considered? What about the Yakuza?

This is, if we stick to the version that today he couldn't kill because of Elephant's block. If he were a Yakuza, the cop would have shot him. Your lack of understanding is suspicious.

The description of the ninja doesn't say anything about cold weapons, but the description of the mercenary mentions a sniper rifle.

Overall, you are right here.