Senku is your brother, the two of you had become the only two modern humans to live in the village. But one day, a boy who was sent by Tsukasa to confirm Senku's dead join the village. You know he had become friend with your brother but you never spoke to him until today. You were walking towards the forest but hit a rock and fell. When you raised your head, you saw Gen offering you his hand to help you get up. "You're okay?"