A great war occurred in the 20th century between humans and monsters. Since that time, the monsters rule the world in fear but keep relatively hidden from public view. A boy named Bokka ponders the past and wonders what became of the Meros Warriors who defended the world so bravely against the demons. He soon meets Kurofune and learns of the power of the Meros and the I-bar machines they ride in battle. Warriors are the only ones who can see and hear the Melody of Oblivion, a phantom girl hidden away waiting to be rescued and be the savior of mankind. During a battle between Kurofune and a demon, Bokka discovers something only his wildest dreams could possibly imagine...he too can hear that melody. Throughout his journeys, Bokka meets many monsters and their agents, friends, and companions as he discovers the true extent of his new powers. He must continue to battle evil in the hope of releasing Boukyaku no Senritsu and free a world that has forgotten its once beautiful melody. (Source: ANN)

In the near future, the sports world is dominated by Neo Wrestling, a new spectacle in which Metal Fighters challenge each other to be named champion. The story follows the girls of the Pretty Four; Miku, Ginko, Sayaka, and Nana, as they face off against the current champions, Team Sapphire. With a burnt out drunk named Eiichi Suo for a coach the girls must not only contend with problems in the arena but also unforseen circumstances that arise in day to day life. Only through protecting their friends, understanding their enemies, and eventually challenging their idol Aquamarine, can Miku and the girls understand Eiichi's purpose and the shady secrets behind Neo Wrestling. (Source: ANN)

On the hot summer day of August 14, Shintarou Kisaragi is forced to leave his room for the first time in two years. While arguing with the cyber girl Ene who lives in his computer, Shintarou Kisaragi accidentally spills soda all over his keyboard. Though they try to find a replacement online, most stores are closed due to the Obon festival, leaving them with no other choice but to visit the local department store. Venturing outside makes Shintarou extremely anxious, but the thought of living without his computer is even worse. It's just his luck that on the day he finally goes out, he's caught in a terrifying hostage situation. Luckily, a group of teenagers with mysterious eye powers, who call themselves the Mekakushi Dan, assist Shintarou in resolving the situation. As a result, he is forced to join their group, along with Ene. Their abilities seem to be like pieces of a puzzle, connecting one another, and as each member's past is unveiled, the secret that ties them together is slowly brought to light.

To be quiet and do as you're told, that's the cowardly choice. These are the words of Junk Dog, an underground fighter of Megalo Box, an evolution of boxing that utilizes mechanical limbs known as Gear to enhance the speed and power of its users. Despite the young man's brimming potential as a boxer, the illegal nature of his participation forces him to make a living off of throwing matches as dictated by his boss Gansaku Nanbu. However, this all changes when the Megalo Box champion Yuuri enters his shabby ring under the guise of just another challenger. Taken out in a single round, Junk Dog is left with a challenge: If you're serious about fighting me again, then fight your way up to me and my ring. Filled with overwhelming excitement and backed by the criminal syndicate responsible for his thrown matches, Junk Dog enters Megalonia: a world-spanning tournament that will decide the strongest Megalo Boxer of them all. Having no name of his own, he takes on the moniker of Joe as he begins his climb from the very bottom of the ranked list of fighters. With only three months left to qualify, Joe must face off against opponents the likes of which he has never fought in order to meet the challenge of his rival.