In the bustling streets of a modern city, Yino Atakori goes about his daily life until a mysterious sword descends from the sky. Intrigued, he grasps it and is instantly transported to a hidden pocket dimension. In this new realm, he uncovers his latent powers, previously unknown and dormant. After mastering his newfound abilities, Yino returns to the real world, now equipped with the strength and skills needed to face new challenges and unlock his true potential.