That was a Karate Technique by Sakaki where he used some kinda breathing technique to lift up his internal organs protecting it from the Spear thrust if I remember correctly, I doubt Apachai knows how to do that technique since he's a Muay Thai/Boran Master. And his Ribcage is literally shattered if you look closely. It's impossible unless they pull some half ass sh*t that can revive people somehow like an Ancient Chinese Medicine or some sh*t.