Overman King Gainer (2002)

Overman King Gainer is set in a distant future where the Earth's surface has become uninhabitable, forcing humanity to live in massive domed cities. The story revolves around a young man named Gainer Sanga, who lives in one such domed city called Yapan. Gainer is a skilled video game player with a carefree attitude, but his life takes a drastic turn when he becomes involved in a conflict between two factions vying for control over the limited resources of the Earth. When Gainer is unexpectedly drawn into the conflict, he discovers his ability to pilot a powerful mecha known as an Overman. Alongside his friends and allies, including the mysterious overman pilot, Gain Bijou, Gainer embarks on a journey across the frozen wastelands of Earth to uncover the truth behind the conflict and find a way to bring peace to the world. As Gainer and his companions traverse the dangerous terrain, they encounter various challenges, including rival factions, hostile environments, and ancient secrets buried beneath the ice. Along the way, they must confront their own fears, doubts, and desires, while also forging bonds of friendship and loyalty that will be crucial to their success. With its blend of action, adventure, and mystery, Overman King Gainer offers a compelling narrative set against the backdrop of a post-apocalyptic world. As Gainer and his allies strive to overcome the obstacles in their path, they ultimately discover the true meaning of courage, sacrifice, and humanity.