Muzan Kibutsuji who had drifted in the void for what felt like centuries is given a second chance to redeem himself and live a happy life as Izuku Midoriya.
Izuku had returned from the quirk doctor, his plan to alter his blood cells worked and the doctor gave his "quirk" the name Demon King, however When Hisashi heard about it he was disgusted at the thought of having a demon as a son and that he wouldn't get any profit from his hero work.
Hisashi then took out a knife and threw it at Inko, then Daki appeared and blocked the knife with her belt.
Daki: How dare you hurt the master's mother
Hisashi: What!? Where did you come from?
Izuku: You should have been more careful Hisashi, truth is...
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Izuku: I never saw you as a father since the day I was born, and I knew what you wanted from the start, a boy with a strong quirk to make you rich.
Hisashi: You damn brat, I'll kill you!
Hisashi Breathed fire.
???: Blood Demon Art: Cold White Princesses.
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Doma: Sorry, but I can't let you hurt Lord Izuku.
Hisashi: How many nuisances do I have to deal with to kill you 2.
Izuku looked Hisashi dead in the eye with his demonic eyes. He then turns to Inko and gives a calm and reassuring smile that seemed to calm her, she knew Hisashi only wanted to marry to have someone to make money, but that he would try to kill them was just wrong.
Izuku: You made the mistake of trying to harm my mother, and for that your life is forfeit.
Izuku then gave a demonic smile that terrified Hisashi.
Izuku: Doma...
Doma gave a creepy smile and faced Hisashi.
Doma: Blood Demon Art: Freezing Clouds.
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