JKSManga
just brainstorming here but what if Ray comes back mid battle or nearing the end of the war stronger than he was because he had escaped the true infected ant and by barely surviving he realized he needed to get even stronger than when the battle had begun so he went off training saving lives and becoming closer to returning to a dragon however there is this haze kr some sort of status effect keeping him from using the system whether it be slight amnesia or some other effect like sera had on him