The story begins with Yuuto, a young orphan boy who lives in a small village on the outskirts of a great kingdom. He has always been fascinated by stories of the powerful demon kings who rule over the demon world, and dreams of one day becoming the king of all demonkind.
One day, while Yuuto is out gathering firewood, his village is attacked by a group of vicious bandits who slaughter everyone in their path. Yuuto manages to escape, but is left alone and without a home. Enraged and determined to seek revenge for his village, Yuuto sets out on a journey to become stronger and defeat the bandits.
Along the way, Yuuto discovers that he possesses a unique and powerful magical ability that allows him to control the shadows and darkness. Using this power, he is able to fend off attacks from dangerous creatures and defend himself against bandits.
As he travels deeper into the kingdom, Yuuto eventually crosses paths with Kenta, a skilled swordsman who is on a journey of his own. Recognizing Yuuto's potential, Kenta decides to join forces with him and help him seek revenge against the bandits who destroyed his village.
Together, Yuuto and Kenta continue their journey, honing their skills and seeking allies to aid them in their quest for justice. Little do they know that their journey will take them much further than they ever imagined, and they will soon find themselves facing foes they never thought possible.