The Mirakuru (ミラクル, translated as The Miracle) also known as Miraclo is a Super Soldier Serum that was created by The Japanese during World War II in hopes of creating an army of Super Soldiers. The Serum would give a person increased strength, speed and rapid cell regeneration. The Serum's only supply was on a submarine that came under heavy fire by The Allied Forces during World War and ran aground on Lian Yu. The Serum was then lost for some time and all the men on the submarine along with the test subject of the serum died on Lian Yu.