After exacting revenge on the people who killed his wife and daughter, middle-aged teacher Maito Mirai is struck down by divine punishment. However, his spirit is transported to another world and inhabits the body of a boy named Ricardo Unius. This unfamiliar world, known as the 'Playground of the Heavenly Gods', is filled with magical beasts and magic. In this world, humans receive a divine gift each time they kill a magical beast for the first time. These gifts are chosen from five options, but Ricardo (Maito) has a sixth option. This story follows Ricardo (Maito)'s journey as he chooses the path of a sorcerer and grows.