I, who should have died after being hit by a car, am reborn in another world. But my reincarnation was into the Mahren tribe, a dubious minority group that uses magic and manipulates puppets. Having had a strong interest in magic from before my death, I lived while enthusiastically studying magic to the point where those around me were a bit taken aback. One day, I heard that in the Mahren tribe's culture, when a person turns 16, they are married to their sister, so I decided to escape to the city. At least, since I have the strongest magic, I might as well make enough money to live without working for the rest of my life and just laze around.