The leader of the wild dogs in the Kiso Mountains is a huge red dog feared as a "demon dog." It was captured by dogfighters Genzo Sakurai and Haruhiko Sakurai. The dog was named Musashi to be kept as a fighting dog. However, when he bit off his opponent's tongue in his first fight, he was banished. Genzo, no longer able to earn money from its fights, turned Musashi into a bait dog. Musashi was muzzled and blindfolded to be attacked by other dogs, but Haruhiko was struck by the way Musashi tried his best to fight, and decided to return him to dogfighting. A comeback match against the fearsome Muramasa was arranged through the Nishiyama, an influential figure in the local dogfighting scene. Musashi narrowly won, but was forced to retire due to injuries sustained in the fight. After that, Musashi began to attack Masamune, a newly acquired fighting dog, every night. Haruhiko's father, annoyed by the dog's refusal to listen to his repeated warnings, finally killed Musashi with a gun! One year later, when they saw Masamune fight for the first time, they were surprised to see that his fighting style was similar to Musashi's. All that time, Musashi had been teaching his own techniques to train the younger dogs. Genzo regretted his actions and closed his dogfighting business, while Haruhiko wept and apologized at Musashi's grave. A tragedy between humans and animals who couldn't properly communicate, comes to a close...

Tetsuya Nakanishi is a trapeze artist working in a circus troupe in Hawaii. He started boxing after being discovered by former boxer Jimmy Smith, and won many fights and overcame many crises with his special punch, the "cross-shaped triple strike," which he adapted from his father, a famous Zero pilot. After winning the championship in New York, Tetsuya returned to Japan, his parents' home country, with Coach Smith, his daughter Marie, and his best friend Sanpei to make it in the Japanese boxing world.

Kenji Kazemaki, aka The Hurricane Kid, is a masked wrestler in the American pro-wrestling scene. He was a Japanese judo prodigy, but had to give up judo to help pay for the trial of his father, who was accused of a crime he did not commit. He was recruited to become the first Japanese member of the elite FBI team, and his father's name was cleared with the help of the FBI. After completing his rigorous training, Kenji received his first order: return to Japan to defend it against a gang infiltrating the country.

Asahi Kira is a young man who, one day, while wandering the Japanese district of Los Angeles, meets Masakiyo Koga, a failed karate fighter, who invites him to his dojo. At Koga's invitation, Kira becomes a bouncer at the dojo, where he teaches his signature fighting techniques to a beautiful female wrestler he meets, Diana Rosa.

In the early spring of 1928, at the former high school "Fifth High School" in Kumamoto. Takeo Kumoi, the vice captain of the judo club at Fifth High School, keeps falling in love with a girl, but he gets rejected every time, even though he gets his best friend Tsutomu Momoyama and others involved. Then, they all drink heavily to heal the wounds of their youth. This is a hidden masterpiece by Ikki Kajiwara, depicting the youth of the young people of the prewar era set in a school setting.

What if Miyamoto Musashi was actually a ninja, and he defeated Sasaki Kojiro using the power of ninjutsu...

In 1962, Isao Shibata debuted as a pitcher for the Giants, but his talent was overlooked and he was told to switch to the field. A young girl named Kiriko appeared in front of the discouraged Shibata and presented him with a secret book of Kouga Ninjutsu that she found by chance in her hometown. With her encouragement, Shibata vowed to make a fresh start as a fielder, and learned the secrets of the ninja arts written in the book one by one.

Tendou Toramaru was an orphan from a small country defeated during the Warring States period. Having lost his parents in the futile battle, he wished for a world where the common people can live peacefully. Without personal ambition or greed, he served as a strategist to help Oda Nobunaga and Toyotomi Hideyoshi lead their armies to victory, using military science he learned from an early age. After many victories, Toramaru was convinced that Hideyoshi will successfully reunite the entire country. So he left the camp to help those who had lost their parents and family members to recover from the war. After that, it was said that Toramaru was an active advisor in the Korean campaign by Hideyoshi's wish.

August 1943. The Japanese airbase at Rabaul was being harassed by American attacks. Defended by a large fleet of battleships and destroyers, the carrier island was equipped with the devil's secret weapon, an anti-aircraft gun with radar, which made it impossible to launch a preemptive attack. When the base captain was explaining this to a team of reporters, a reporter from the mainland pointed out one of them was a fake. His name is Yoshihiko Nanjo. After graduating from the army school, he was given the code name Sakura No. 1 and assigned to infiltrate the carrier island to destroy the anti-aircraft guns. He was injured and captured by the enemy who wanted to learn his secrets. But he escaped using the special tool hidden in his clothing. He stole an aircraft with a bomb, hoping to take out the anti-aircraft gun, but the bomb failed to explode. Bombarded by shells, the aircraft was badly damaged and he was seriously injured, Sakura No. 1 sent his plane at the anti-aircraft gun on a suicide attack, successfully destroying it at the cost of his own life. The tragic hero Sakura No. 1 accomplished his mission without anyone knowing.