of course the "tightest" weapon in the manga is wyld's tree branch, he blocked gatts sword with it. and plus he can find it everywhere thats what makes it "tight".
Very Soon Skullknight will run out of behlits to eat. so he will go after gatts who has the last one left. They will fight till gatts just gives the idiot the stupid behlit and he goes back to trying to kill griffth.
Ok enough of this I will tell you the ending....
Gatts finnaly kills the new band of the hawks by himself and finnaly gets ready to fight Griffith. Gatts knows if he fight Griffith fairly he will lose because Griffith got demon powers and stuff. Anyway, Gatts gets ready to attack him, but...