Based on the manga by Inoue Noriyoshi, which has also had a SNES game spinoff
Natsume Kiroemon is the 45th leader of the Natsume family to inherit the Kouryuu no Mimi, a tool which gives its bearer easy access to wealth and women As a result of his father#39s death, he leaves the Italian monastery where he had been training and to rightfully take on the name Natsume Kiroemon as well as the power of the Kouryuu no Mimi Upon his return to Japan, he falls in love with Kanako, one of the members of the rival Mina family However, the evil hand of the Mina family attacks Natsume repeatedly and abducts Kanako But now that Natsume has unlocked the seal, making the Kouryuu#39s power surge, he can strike back at the Mina family