After defeating the Tai Chi fighters, Asuka realizes he strength is no longer what it was, and continues to train by himself on Mount Minobu. However, Yahachi, a Shaolin master who also lives on the mountain, discovers Asuka's weakness.
On his way back to Japan, Asuka stops in Hong Kong. He meets Old Man Chen, a Chinese martial artist and requests a bout. The moment they face each other, Asuka is certain he can defeat him with one strike.
Kaiser points a gun at Asuka, who refuses to relent to his pressure, and forces him to take part in an underground wrestling match. Asuka is stunned by the fierce battle where fighters' lives are truly at stake.
After learning Asuka's strength, Joe Brad suggests he take part in Hell Wrestling at a nightclub. Asuka realizes Hell Wrestling is just a show using fake blood and enrages Kaiser, the boss of the entertainment world.
Ken Asuka travels to New Zealand to meet Chief Upol of the Maori people, who is said to use a sickle similar to a boomerang. Once there, Asuka enters the Lumberjack Competition, part of the Easter Parade festivities.
After defeating the Red Scorpion, a former boxer, Asuka challenges Henry Arthur, a first rate heavyweight boxer. Asuka takes on Arthur head on, despite his dynamite punch that can kill him with one hit.