[System + Multiple Female Leads + Ruthless + Rogue Ninja] On the night of the Uchiha massacre, Sasuke, who was in a coma, suddenly woke up and slowly walked towards Fugaku Uchiha. "Father, don't blame me, this is all for the revival of the Uchiha clan. I'll be taking your eyes." From that moment, the ninja world gained an utterly villainous demon king. Jiraiya: "This is my beloved disciple, Naruto." Tsunade: "This is my direct disciple, Sakura." Orochimaru: "This is my great father, Sasuke." Years later, Sasuke looked back and found that he had become invincible in the world, with many descendants, while Naruto next door was still a lonely old bachelor. Sasuke couldn't help but sigh and say, "I, Uchiha Sasuke, am truly..."
The only problem i have in this fanfic is kurenai was his teacher, but kurenai at this time is only 10-12 years old. the day nine tails attack the village and when the end of 3rd ninja war ended she was only 10-12. she was still a genin at that time.