Undercover?

Naruto has lived for many years; more than any ancient man one has ever met, yet still look at his teens. These circumstances led him to keep to himself and just travel around. What he didn't know that he has left marks of himself all over the world.

At this point, he founds himself as one of the most powerful hunters in the world, but the thing is he doesn't want that. So he would usually destroy of any hints of what he looks like. However, an old friend found him and asked a favor. Now Naruto's an undercover examiner, and he just so happens to catch the attentions of a certain clown and an emotionless assassin.

Warning: Yaoi, Threesome