I sell my beauty in the fairy world

One day, Qin Se solved the mystery in his womb and discovered that the world he lived in was one where girls chased boys, with the ratio of girls to boys being three to one. There were also Pokémon, Digimon, and Cell elves... He thought about it for a long time and decided to sacrifice himself to be a heroic husband and a heroic father. He was going to marry twenty women openly, raise dozens of daughters, and raise many monster girls.