I don't read the novel but pretty sure he can fix his mana syndrome later. Like in the game he was a swordmaster. That requires mana. Well at least he'll definitely use sword aura again in the future but idk if he'll use magic or not
His syndrome is a special case where it’s not that he has no mana it’s just that his body can absorb an infinite amount like it sort of passes through him
To those who read the novel
Will the Mc ever be able to use magic? Or will it be blink only with all his other tricks etc