Izuku bites and drinks Izumi blood

Before izumi could even attempt to do anything,Izuku had put Izumi in a trace via his hypnotic stare,a power that his master had told him that he now possessed.

"You are going to feel so much better now,dear sister~"Izuku said to his traced sister as he remembered how his sister always had quite the confidence issue due to her not having a quirk and feeling outclassed by their fellow classmates,grunted he also had a confidence issue(prior to being corrupted)as well but it wasn’t nearly as bad as Izumi and even though Izumi trained so much harder than him (izumi has trained and learned some martial arts skills which has given her some lean muscles)

But now he can grant Izumi newfound power,by turning her into a vampire,his sister would never feel or be powerless anymore.

Izuku decides to not waste anymore time and he bites down at Izumi neck which also releases her trace."I-Izuku what are you doing!"izumi said loudly as she tried to escape but it isn’t possible as Izuku grip on Izumi is too strong thanks to his new vampiric enchantment but it doesn’t matter as Izuku goes to drink Izumi blood as she begins to feel something strange inside her very soul.

"W-what going on"Izumi said as her resistance has lessened and she starts to feel hot as Izuku stops drinking her blood and lets Izumi go as she falls down to the floor as she begins changing.

Izumi hair begins to slightly darken,her skins becoming pale,her ears become slightly pointy,she gains fangs and her pupils are now thin slits and her curves increase with her modest breasts becoming fuller and perkier as they are now a C-cup,her ass bigger and rounder and her thighs thicker.

After just a few minutes,Izumi has finished her transformation and Izuku licks his lips at just now sexy his sister now looks,he can’t wait to fuck her every hole.

"W-what’s happened,I-I feel so good~"Izumi said as she has touch and foddle her enhanced pale breasts as Izumi feels just how sensitive her skin has become now and just how she feels so good right now,but she feels something empty inside her that needs to be filled.

"Ahem”Izuku faked coughed to get Izumi attention,"I’m so glad you already accepted our master gift,so let me reward you for being such a good slut~"Izuku said with a lustful smile as he noticed that Izumi didn’t really focus on him but rather she focused on his fully erected cock and she crawled to get closer to Izuku cock."go ahead"Izuku said as Izumi face is inches away from his cock as she smells the strong musk of his cock,Izumi is suddenly feeling conflicted about that as a part of her is saying that this is all wrong and that she should get help,but another more louder and darker part tells her to give in and enjoy her brother cock.