Kouryuu no Mimi: Mina no Shou

Natsume Kiroemon holds the position of 45th head of the Natsume clan, having inherited the Kouryuu no Mimi, an artifact that grants its possessor effortless access to riches and female companionship. Following his father's passing, he departs from the Italian monastery where he had been undergoing training, so that he may legitimately assume the name Natsume Kiroemon along with the Kouryuu no Mimi's power. After coming back to Japan, he becomes romantically involved with Kanako, who belongs to the opposing Mina family. The Mina family nevertheless launches repeated attacks against Natsume and takes Kanako away by force. Having now broken the seal, however, Natsume causes the Kouryuu's power to swell, enabling him to retaliate against the Mina family.