Yes, lets solve this with aggression and seek him out.
First post on this forum and as a new user it's not a hood welcome to see such a thread but, and I mean this in a polite way, I can't agree with encouraging aggression towards the author.
Now this post isn't about Japan but its good to note that Japanese culture might teach as that such a western idea.of aggression may be a little harsh and such an issue should be solved with sanctions rather than this.