Demetrios, a young man in ancient Greece, was just an ordinary apprentice of a pot painter and a "herbivore otaku". He didn't like competitive activities such as sports or fighting, but he was born with excellent physical fitness and a good figure. One day, he was involved in a dispute between villages. When he was in trouble, he suddenly arrived in Tokyo in 1964 and even broke into the competition venue where the Olympics were being held? The miracle comedy that transcends time and space by the author of Thermae Roma begins here─!