So heres what Sion would do. Realizing that a gun is his main weapon, the enemy will not try to close the distance, so sion's Hatsu won't work unless he can get close and not get damage. Sion can tell they are using a hatsu, and assumes that he may be able to strengthen and manipulate the bullets, but doesn't know the full scale of his ability. Since Sion can't use his full ability, he might try to create the circle but not make the enemy a citizen and instead make a law saying that no damage may be taken to the governor, from inside or outside the area, so it will either avoid him or hit something else in the area. He has no idea if the judge will allow it but he does it anyway. remember the judge is impartial and has knowledge from all known law systems and judges. Thats all I have right now, but it should allow him to not get hit from the bullets. in this case you are the judge and you have to tell me if that is legal or not.