Drarry into the omegaverse

Draco kills Voldemort

"Potter!" Draco ran across the courtyard to Harry after seeing Harry get up from where his supposed corpse was. As soon as Draco made his way to Harry Harry pulled the omega into a heated kiss. Even Voldemort was taken aback for a moment before hurling the killing curse at Harry once more. Narcissa blocked the curse and Harry and Draco drew their wands helping Narcissa counter the spell. The three of them overpower Voldemort and without pause Draco immediately cast the killing curse towards Voldemort. Since Harry had been killed by Voldemort thus fulfilling the prophecy "one must die at the hands of the other for neither can live as the other survives" Draco's killing curse works. With Voldemort and Bellatrix gone the deatheaters started to retreat. 

"Draco..." Harry looked at the omega. 

"He was trying to kill you! I had to stop him" Draco says "we can't exactly raise 5 kids together if you're dead" 

"5 kids?" 

"James, Lilly, Scorpius, Sirius, and Cissy"

"You already named them?"

"Well I figured you'd want to name two after you're parents and one after your godfather-" 

"We're not even dating and you've already picked out baby names?" 

"You're the one who kissed me! And they're not set in stone, we can talk about them" 

"And if I don't want kids?" 

Draco smiles and kisses Harry on the cheek "don't worry about it" 

Harry sat in the great hall with Draco in his lap. "James Sirius Potter, Albus Severus Potter, Scorpius Remus Potter... Lilly.... Lilly... What's Lilly's Middle name?" 

"Molly" Draco answered "Lilly Molly Potter and Narcissa Aurora Potter" 

"Narcissa? After your mom?"

"Yes, but we'll call her Cissy to make things less confusing"

"And Aurora?"

"I've always liked that name, not all of our kids have to be named after someone" 

"Okay, Lilly Molly Potter and Narcissa Aurora Potter" Harry wrapped his arms around Draco 

"I don't want us naming a kid after Dumbledore" Draco said after a brief silence 

"Why not?" 

"Because he's awful" Draco says. He let you grow up with an abusive family, and raised you like a lamb for slaughter" 

"He had no choice-" 

"He could have visited to make sure they weren't mistreating you" Draco said "he could have done more to protect you" 

Harry looked at Draco, he wanted to defend his mentor, but didn't feel like arguing with Draco. He rested his chin on Draco's shoulder "so what name will Albus have instead?" 

"Remus Severus Potter and Scorpius Hyperion Potter" Draco says.

Harry looked at the crowd of people gathered around, waiting to ask Harry various questions. Draco had set up a shield charm so Harry wouldn't have to deal with them bombarding him with questions. 

Molly Weasley pushed her way to the front of the crowd and Draco let her in the protective bubble. "Harry dear, are you alright? Do you need anything?" Molly asked 

Harry nods "I'm fine, go be with your family" 

"You're part of the family" she said 

"Go join them" Draco moved off of Harry's lap "I'll be waiting for you here" 

Harry took Draco's hand and followed Mrs Weasley to the rest of the family and Hermione who scrunched up her nose at the sight of Draco "what's he doing here?" She asked 

Draco looked down "Hermione-"

"Don't talk to me! You're-"

"I'm sorry" Draco said

Hermione looked shocked "what?"

"I'm sorry" Draco repeated "I treated you horribly when we were younger, I was just echoing my father's hatred, if I hadn't been so blind we probably could have been friends..."  

Hermione looked over Draco, "oh" 

"You are the brightest witch at Hogwarts and living proof that my father is completely wrong about muggle-born witches" 

"I-" Hermione didn't know what to say. She didn't quite believe Draco just yet, but knew he seemed genuine. So she just said nothing.