Tough Gaiden - Ryuu Wo Tsugu OtokoTough Gaiden - Ryuu wo Tsugu Otoko; TOUGH 龍を継ぐ男; Tough Gaiden - Ryuu o Tsugu Otoko; Tough Gaiden - The Man Who Succeeds the Dragon; The Man Who Succeeds the Dragon; Жесткий: Преемник Дракона

The series starring one of illegitimate children of Kiryu Miyazawa, Ryuusei Nakamura. Years after Kiibo founded the new dojo, both him and Kiryu mysteriously disappeared. Ryuusei, after losing his mother to cancer, is set to find out about his birth father and his destiny as the evil dragon’s heir, but he is not the only one.