The year is 20XX. Mysterious huge robots called Giant Robo (GR) started to appear all over the world and destroy cities. The earth was covered with fear. And their next target is Japan! The hero of this animation Daisaku Kusama, who works in a diving shop, encounters a mysterious girl, simply called V who leads him to make a contract with an enormous robot Giant Robo 1 (GR1) at the ancient ruins (Minami Yonaguni Island) in Okinawa. He made a contract with UNISOM (good guys) and was approved to be a commander of GR1. Thus his battle has begun against GRO (bad guys) and creates a lot of dramas. Before long, Giant Robo of the 21st century will ask the world the true meaning of its power. (Source: AniDB)

A young man named Riddle had lost all of his friends—and the entire world—at the hands of a mysterious organization known as the Box of Malice. Having lost all hope to live, he dwelled in a pit of despair until he has one final revelation. What if... he could return to a time before everything ended? And so, after a thousand years, a deformed Riddle finally manages to reverse time. I'm going to stop them this time...! Equipped with a thousand years of knowledge and experience in his young body, the Great Sage Riddle's journey to the past now unfolds! (Source: Shogakukan, translated)

Duwei is born into this new world from Earth without a sound, he does not cry, he simply stares at the people around him. As he grows he does not speak and curses this new world he was forced into. His Father a Great General is sure there must be something he has an aptitude for, however he is simply trash. Disregarded by his family as the Retarded heir. This is the story of his journey to discover the truths of this world and use the knowledge of his past life to remove his title of retard, even if he has to become a devil.

Once upon a time, there was a lord in Shinano Province who hated old men. In accordance with the rules of the province, a person was exiled to an island when they turned 60 years old. On the night of August 15th, there was one such farmer woman, but her son loved her, and took her to a mountain to leave her there instead of turning her over to the cruel officers. However, he felt sorry about what he was doing and hid her under the earthen floor of a barn. One day, a messenger of the lord of the neighboring province was sent to the lord of Shinano Province making an unreasonable demand that a silk thread be threaded through a winding hole in a crystal ball and threatened that force would be used unless the task was done. The devoted son consulted with his mother, and she taught him a method in which you put honey around the end of one hole and let an ant tied with a thread go through it from the other end. The lord rewarded the son. However, a messenger was sent from the neighboring province again demanding that they identify which of two identical mares is the parent and which is the child. The son asked his mother again and then told the solution to the lord. When told by the lord that he would grant the son’s wish, he pleaded for his mother’s life. Since then, old men and women have been treated with respect and are no longer exiled. (Source: Japanese Animated Film Classics)