A group of private sword guys are in your rice paddy. You must detain them at once! Private sword guys are people who work for private companies and use their swords on people. They're basically paid assassins. And you're going to detain them!
You're running out of steam and you're afraid you might not be able to detain all of these guys when Ryu (りゅう) from Street Fighter appears. He hates swords, and will only use fists because it's the honorable way to fight, so he starts helping you detain them!
He's also found a loophole (る) in the system and you don't have to be super gentle with these guys either. So detain them as forcefully as you want. It is your rice paddy they're in, after all.