World End Harem - Genshin Impact Edition

5 years ago, an incurable disease ravaged the lands of Teyvat. Men, young and old, vision or no vision fell victim to this brutal disease. No male was spared. In a futile attempt to save the world, the leaders of 4 nations combined forces in an attempt to summon a hero. They needed someone, anyone, to come save the world and mate with every female on it.