In Big Money City, players participate in "Hero Battles" using Bankfon Gs, which allows them to rent powerful hero suits and fight battles against other players, receiving power boosts from the system's public domain feature. Kaito Goushou, a young elementary school student who is always eager to help others, ends up hastily signing a contract to rent the powerful unlisted hero suit, "Enter the Gold," from a mysteriously seedy priest named Sennen; however, he soon learns that the suit comes with a debt of 10 billion yen, and Kaito must now clear his dues by winning Hero Battles. (Source: Wikipedia)

The story of the card game follows what happens when "Hairou" portals suddenly open, fusing five different worlds together. As a result, various mysterious "Exceed" powers are awakened in teenaged girls. An academy for these so-called "Progress" girls is built on the isolated Seiran Island in the Pacific. (Source: ANN)

The story begins in the future when Earth itself is no longer inhabitable by living creatures. Humans began their interstellar migration with space colonies. Vince and Hana work as researchers in the Cambrian Project. Together with the creature Pikaia, they seek the Lost Code, the key to restoring Earth, and aim to return to Cambrian-era Earth.

After falling in battle, the samurai Jin wishes to be reincarnated with an "invincible metal body"; thus he is reborn as a coffee vending machine in present-day Seoul. Each night, he continues his eternal battle with other samurai who have been reincarnated as otherwise mundane objects. But, one day, he meets Hemi, a girl who buys a drink from Jin's vending machine body. After many similar encounters, Jin realizes he has fallen in love with her. Will his love be able to reach Hemi?