Hermes, the fourth son of a noble family, lives out his days barely doing anything fruitful. Then, one day, while he was living like that, he was forced to take over as the head of the family. Although his big sister Sora has always been kind to him, Hermes still doesn't want to take on the role. That being said, his power was so absurd that even if he wanted to hide it, it was impossible! Easily destroying calamities, finding incredible treasures without even meaning to, beating demons and dragons, attracting the princess's admiration, being sought after by the sword saint's granddaughter, having his prostitute friend depending on him more than ever...! Here opens the curtain on the story of the man who didn't want to take anything seriously but ended up fascinating people and making them fall in love with him. The tale of the one who is the strongest head of the family ever.