During a martial arts tournament, 16-year-old Shurato and his friend Gai are engulfed by a massive ball of light, transporting them to a mystical heavenly realm. To their surprise, Shurato learns he was once the ruling king of this realm, now returned to his former role. As tensions rise and friendships are tested, a mesmerizing tale unfolds, weaving a captivating story of betrayal and destiny.