I am sorry if this has cropped up before. If you target Mizu and another model with the A6A and Mizu uses shadowflash to move 3 circles but still remains in LOS, does the A6A still attack both targets or only the other model as the rules require both to be adjacent? Unfortunately, the rules only require this adjacency for initial targeting, that is why I was asking.

Well, that is a good question! I never had this problem because i dont have Mizu, but it could have happened with Hoss. And for me, those 2 abilities to move around before an attack, work like a reset in targeting, the figurine is being targeted at some circle, when he/she moves the attacker must choose a new circle to attack, if it can target the same figurine it will, if it can't he can even target another figurine, so i believe that if Hoss or Mizu end up in a circle without any other figurine around you can't target the original circle extra figurine, but that's a problem too, because if they end up in a circle around someone else, that person for me can be a legal target now in canse of AOE attack like Barry Machine Gun.

I can't see how else to rule it:

If doing so invalidates the attack, which it does- they must choose a new legal target or forfeit the action- meaning they have to select new target(s) since selecting the original two has been invalidated.

If you backflip into a spot that lets barry open up on a better target- that was a bad choice lol