In a world where the past and present intertwine, a young boy named Ryuichi discovers a power beyond his wildest dreams. After a chance encounter with a mystical phoenix, Ryuichi finds himself imbued with the powers of the past demon king, a legendary hero, and a wise sage. This isn't just a gift, but a system— a phoenix-shaped system that not only grants him these powers but also guides him on his journey. As Ryuichi navigates his way through the trials and tribulations that come with these newfound abilities, he must learn to balance the raw strength of the demon king, the courage of the hero, and the wisdom of the sage. Ryuichi's life transforms into an epic adventure filled with formidable enemies, unexpected allies, and a quest to understand his destiny. As he grows, so does his understanding of his powers and the responsibility they carry.