Super Tank 

How the Strongest Tanker Bae Wang-Sik Protects the Earth. Bae Wang-Sik, a tanker from the Hunter Nation of Korea who is not widely known to the outside world. Despite the request for naturalization from the United States by the Hunter Nation Director Kang Il-Seop due to his upright personality and his own personal goals, Bae Wang-Sik continues to operate in Korea. Bae Wang-Sik, who was kidnapped to the world beyond the gate, the 'Azelan Continent', 10 years ago and suffered terribly before returning alive, has the goal of protecting the entire Earth and bringing his friends who were kidnapped with him back to Korea. And the moment he achieves that goal...! He moves to destroy the Azelan Continent, which is trying to destroy the human race of Earth by invading the gate.