Revitalize Uchiha, start with crazy childbirth

[Friendly reminder: This book is outrageous]
Xia Yu's soul traveled through the ninja world and became a member of the Uchiha clan, and was even in the bedroom of a beauty.
Unable to resist the temptation, he stayed awake all night, and when he returned to his clan, he suddenly found that the Uchiha clan had been exterminated! Only the young Sasuke and him were left alive...
Isn’t this the famous Night of Genocide?
I thought the plot would develop according to the original work, but I never expected that the offspring prosperity system would appear. As long as Xia Yu had more offspring and the Uchiha clan prospered, he could get all kinds of powerful and strange rewards...
"Tsk tsk... In order to revive the Uchiha! It seems I have no choice but to put myself in a difficult position!"
"Konoha, Danzo, the indecisive Third Hokage... aren't you ostracizing us Uchiha? When my descendants, Uchiha Xia Yu, are spread all over the ninja world, I will see who is ostracizing whom!"
……
After who knows how many years, Uchiha Madara suddenly resurrected. When he was about to activate the Infinite Tsukuyomi, he was stunned when he saw the Sharingan everywhere in the ninja world...
"Ah...are these all Uchiha?"...