The Ultimate Tank

Shoya Ohno, a tank affiliated with the Japan Hunter Administration Bureau, is a man shrouded in mystery. He was drawn to the straightforward personality of Eda, the director of the Bureau, and despite receiving an extraordinary offer from the United States, he turned it down to continue operating in Japan for his own personal reasons. In truth, Shoya is a survivor who, ten years ago, was abducted to the otherworldly continent of Azelan. Despite enduring unimaginable suffering, he managed to return to Earth alive. To protect the Earth and to rescue his friends who were abducted just like he was-- Shoya continues to fight. And once that goal is fulfilled... He will rise to confront the continent of Azelan, which seeks to annihilate humanity on Earth through its gate invasions. Thus, Shoya sets his plan into motion.