A rich kid inherits a magical artifact that literally opens doors to money and women, then immediately has to choose between using it and actually wanting to be the person he becomes if he doesn't. The OVA doesn't waste time pretending this is about anything bigger than desire versus self-respect. Two episodes is exactly long enough to wreck someone's certainty about what they'd do with that kind of power.
Natsume Kiroemon returns to Japan as the rightful heir to an ancient family legacy: the Yellow Dragon's Ear, a mystical artifact that grants its wielder extraordinary power and influence. Fresh from monastic training in Italy, he steps back into a world of family honor and dangerous rivalries, only to have his carefully ordered life upended when he meets Kanako, a beautiful woman from the rival Mina clan. What begins as forbidden attraction quickly becomes a nightmare when the Mina family makes their move. They kidnap Kanako and escalate their attacks on Natsume relentlessly. Desperate to save her and protect what matters to him, Natsume unleashes the full power of his inherited artifact, shattering the restraints he'd placed on it. Now he's about to discover just how devastating that power can be. This is a collision of martial arts intensity, family intrigue, and personal vendetta. Romance and action burn side by side as Natsume wages war against an entire clan, armed with a strength he's barely begun to understand. The question isn't whether he can win, but what he'll become in the process.