this is set when luffy fights kaido so luffy is hurt on the floor while zoro is going 9 sword style, zoro gets beaten, and as kaido is about to kill zoro luffys devil fruit (Gum Gum fruit) fully awakens and unlocks gear 6 gear 6: red hair, huge fists, insane conquerers haki, built like a short whitebeard (sorry if i got the fight wrong ive only seen clips)