Tetsuwan Atom Bekkan

In the distant year 2003, Japan is a technological utopia, and robots are everywhere. One such robot, Tobio, was built by the brilliant Dr. Tenma to replace his dead son. But when it soon becomes apparent that Tobio is an imperfect copy of his departed child, Dr. Tenma throws him out. He is rescued from the scrap heap by the benevolent Professor Ochanomizu, a crusader for robot civil rights. Now the little robot, renamed Astro Boy, is given a mission to defend Japan and the world from all manner of sinister threats. Using his seven super-abilities and 100,000 horsepower worth of strength to battle evil, Astro hopes to set an example to the world of the good which all robots are capable of. Note: Chapter count only includes chapters from the original 1952 to 1968 serial

Taking place in a medieval fairy-tale setting, Princess Knight is the story of young Princess Sapphire who must pretend to be a male prince so she can inherit the throne (as women are not eligible to do so). This deception begins as soon as she is born, as her father the King announces his baby is a boy instead of a girl. The reason for this is that the next-in-line to the throne, Duke Duralumon, is an evil man who would repress the people if he were to become king, and because of this the King will go to any length to prevent him from taking over. (Source: Wikipedia)

This is a grand-scale hero action adventure in which a boy given an iron body via the secret weapon "Big X," possessed by the Nazis, battles against evil. Invited to Germany during World War II, Dr. Asagumo is asked by Hitler to collaborate with him on the research of the new weapon Big X. Concerned about the possible affects of the completion of Big X, Dr. Asagumo intentionally delays the progress of the research, conspiring with his co-researcher Dr. Engel. Immediately before Germany is defeated, Dr. Asagumo implants a card inscribed with the secret of Big X in his son, Shigeru, and is then shot to death by the German army. Twenty years later, the card is discovered in the body of Shigeru, who was then living in Tokyo. Then, an organization claiming alliance with the Nazis appears, steals the card, and completes the Big X project. Dr. Engel's grandson has joined the Nazi Alliance. The completed Big X is then revealed to be a drug that can expand the human body without limitation. Recovering Big X from the enemy, Shigeru's son Akira fearlessly challenges the Nazi Alliance and Hans Engel, who are plotting to conquer the world. (Source: tezukaosamu.net)

It’s a battle for the fate of Earth between a space invading army lead by the ominous being named Goa vs. Earth’s defender, Magma, the giant robot—and Mamoru, a news reporter’s son, that’s caught right in the middle. Can Mamoru team up with Magma to save the planet?(Source: eManga)

Among adult readers in Japan Black Jack is Osamu Tezuka’s most popular achievement, and perhaps the most close to the creator’s heart, as Tezuka considered entering the medical field—majoring in medicine in college—before devoting his life to comics. Black Jack is a genius surgeon who never acquired his license due to his clashes with the medical establishment. He is hired out by anyone willing to pay his exorbitant rates and is perceived as a heartless rogue because of his enigmatic nature and antisocial manner. But as readers will soon discover, that is not the whole story. (Source: Kodansha USA) Note: Won the 1st Kodansha Manga Award in the Shounen category in 1977.

A little unicorn named Unico lives with his mistress Psyche, bringing her happiness and good fortune in return for her unconditional love. The goddess Venus, however, grows jealous of Psyche's legions of admirers and flings Unico across time and space! When he awakens, he's facing down mean buffalo in the American West, with no memory of Psyche or his past life. It's the first of many exciting adventures that will bring Unico face to face with high society in Imperial Russia, characters from fairy tales and Shakespeare, and even an automated factory intent on blotting out the sun. (Source: eManga)