Personal blood bank (Tododeku omega/vampire au)

Another one

This contains blood-drinking and cutenesss

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Izuku pov:

I helped and showed Denki how to build a nest while Recovery girl gave Shinso a shot to help calm him down, and to prevent pregnancy in case. I rolled my eyes smiling at the thought of my own pregnancy "Thank you" Denki said and I pushed hair behind his ear "Anytime okay. I'm here" he nodded and looked at Shinso.

The boy looked back at him "You may give a feeding mark" Denki whispered "That's it for now" I smiled and stepped to the side allowing the alpha to get closer. Denki patted next to him "Come" Shinso got in slowly "Thank you Midoriya" he said and I nodded "Hurt him I hurt you" I said with a slight smile.

He nodded "I would never but okay" I nod and Denki reached for me "Somethings different bout you" I nodded and leaned down to his ear "Because I'm pregnant but not telling okay" he nodded smiling. "Okay" Recovery girl looked at me "Thank you Izuku that was very kind of you" I nodded at the beta woman "Well us omega build a bond with each other, similar to family" she nodded at my comment.

Shoto wrapped his arms around me "Smell like another alpha in rut" he growled and began scenting me which made Denki whimper making Shinso growl, making Shoto growl loud. I growled over everyone and they all stopped. I covered my mouth the mix of everyone's scents getting to me. I leaned over the bin and began emptying my belly. Denki got up rubbing my back growing at my alpha.

I leaned back groaning "Izuku?" Recovery girl questioned "I was gonna ask but isn't your heat late" I nodded "Yeah, I'm pregnant. Just found out" Shinso gasped "And you got that close to an alpha in rut are you stupid" I growled at him "I will to protect another omega" I nuzzled the omega hugging me. "Omega build an instant connection, one like family if there are only a few of them in a class." Recovery girl said.

The alpha nodded "Which means as much as if they were family. They are willing to go through hell and back for each other." Shoto smiled "So Izuku is just being his cute omega self" Recovery girl nodded smiling "Yess, Izuku has formed an instant bond with Denki as they are the only omegas in your class" Shinso pouted slightly

 Shoto helped me up and Denki went back to his nest. "So they'll most like stick with each other now and will protect each other and their respected mate" Shoto nodded nuzzling my neck "Oh and I should say as Izuku is pregnant Denki might start taking on a neutering roll and helping to look after Izuku" Shoto nodded "Why is this?" Shinso asked  "Well back when I was a younger girl omegas tend to be in packs and share an alpha" we nodded at her.

She gave a sad smile "The alphas would mark them all and not gain a mark in return meaning they could mark many." Shoto gave a quiet growl "So the omegas became protective of each other as they related to each other deeper and felt safer with each other than with their shared alpha" The alphas nodded.

Shoto hummed "So it stems from the instinct of protection" Shoto said and the girl nodded "In an omega's mind the more omegas the safer their young is" I nodded confirming it "So it was Izuku who created the bond?" Shinso asked and Shoto glared seemingly offend for me.

Recovery girl nodded "Yes and no, naturally as he is pregnant he created a bond with another omega and due to the pregnancy and Denki fear the bond was sped up" Shinso nodded looking ashamed "but the bond would have been formed either way it just would have taken longer." The alphas nodded again. 

Shoto licked my neck and bit my shoulder then began drinking. "Izuku sensed Denki's fear and Denki sensed Izuku Pregnacey so their omegas took over to protect" Shoto smiled pulling away healing his bite "My omega is so perfect" I purred as he rubbed my belly nuzzling my neck.