I think there has to be something more to this, like maybe the person looking through the parcel may have thought the two teenaged boys in the manga or something were infact twelve? I've seen it happen before with my gen manga--so I don't think there's ever going to be a full out raid, perhaps something about the man's personality maybe? He may have a history of pedophilia and this is icing on the cake?

At any rate, I don't think it'll lead to any full scale raids...otherwise, almost more than half of LJ, as well as many people who attend Cons at this point in time are in fact doomed...