Revival of Uchiha, Starting with a Harem

Transmigrate to Konoha and become the only surviving member of the Uchiha clan. In order to revitalize Uchiha, Uchiha Natsuo had to decide on the strategy of "save the clan with a harem, prosper the clan with many children"! After all, his system is [More Children, More Blessings].---This is a...