Saionji Ryoma, a young man, thought he was at home, but suddenly found himself in a strange hut. While he was confused, he suddenly received an email on his smartphone, which for some reason he had with him, from someone calling himself "the god of games and pleasure." To his surprise, in response to a wish that Reima had muttered, he was invited to another world. Not only did he have his smartphone equipped with cheat functions, but he also received the bonus of being transported as an ultra-rare species, a demi-god! Although confused, Reima is excited that he has "come to the other world he has dreamed of," and follows the tutorial displayed on his smartphone to head to the city. However, those around him do not miss him as a demigod!?