Rebel's Blade
Being abandoned before, K, a simple human, now tries to be a loner. Yet the society loves him and cares about him. But his little world gets crushed by the intergalactic advanced alien species, namely Dramons, who, by his sheer bad luck, becomes his biggest enemy. Being overwhelmingly weak, as a human, he needs to rely on an ancient sword, Nandak, to fight against this big of an enemy and win or else, the lives at stake would just perish.