Killua is a tactical genius, this plan shows that completely. With Angel's Breath, Gon's injuries will be healed but I have to wondered if that had anything to do with Gon sacrificing his arms. Honestly, I'd lean to saying that he'd sacrifice them even without a way out. Regardless, I like the Genthru's one condition is that they heal his friend & I like that our main characters had planned to heal everyone from the beginning even more.