Elementhunters  

صائدو العناصر, 엘리먼트 헌터, エレメントハンター, 元素獵人, Element Hunter

In 2029, there was a significant ground sinkage in the Mediterranean Sea that led to the sudden disappearance of chemical elements such as oxygen, carbon, gold, molybdenum, and cobalt from the earth's crust. This event resulted in a decrease in the human population by 90% within sixty years. Researchers discovered that these missing elements had been drained into another planet known as "Nega Earth," which exists in a different dimension. To save Earth, a special team called the "Element Hunters" was formed. All members of this team were under thirteen years old because young and flexible brains are required to access Nega Earth.