DISCLAIMER: I do not own Harry Potter or Hellsing.
Harry woke, coming down into the Gryffindor common room. Ron stood beside the tree, with Alucard leaning against the wall not far away. Sitting in the chair, next to Hermione, was Seras, wearing a pink jacket. Harry moved over to Seras.
"Seras? You came here for Christmas?"
Seras smiled. "Yeah. Happy Christmas, Sir Harry."
Seras then hugged Harry tightly, earning several whistles from nearby students. Harry turned to see that the whistles had mainly come from the Weasley twins, Fred and George, Ron's older brothers. The twins jumped when Alucard suddenly appeared from the wall behind them.
"I wouldn't laugh so readily, boys. Seras may seem girly and harmless, but if you saw what she truly is you would piss yourselves."
The twins chuckled. "What is she, a bloody vampire like you? Yeah right, is if we'll believe that."
Seras smiled sweetly, releasing Harry. "Well actually, yes, I am. It's nice to meet you."
Ron moved closer to Seras, looking at her closely. He found it hard to believe that this sweet girl was a vampire. Hermione, for her part, was not surprised. She had accidently brushed Seras' arm while sitting with her, and noticed Seras had no body heat. Hermione hadn't reacted to this. Seras was exactly the sweet girl she seemed, and after months with Alucard creeping around the halls, Seras was not at all scary to Hermione.
Ron looked closely into Seras' mouth, noticing her sharp canine teeth. Suddenly Seras turned to him, looking slightly cranky.
"Stop it."
Ron took a step back, looking nervous. Seras smiled again, before turning to see Fred staring at her chest, looking interested. Seras suddenly ran up to him, flicking his nose with vampire strength. Sensing that George was also looking, Seras flicked him in the side of the head, spinning him around. Harry, Hermione, Ron and Alucard watched with great amusement as Seras spun the twins around in a comical fashion. Finally, she stopped, and the twins staggered to a stable position. They then said simultaneously, "Bloody hell. You're really a vampire?"
Out in the Great Hall, Harry sat to enjoy lunch with his somewhat dysfunctional family, though nowhere near as dysfunctional as the Dursleys had been. Malfoy walked behind Harry, bumping him on purpose. "Got your little girlfriend with you for Christmas, do you Potter? She looks like a reasonable smooching partner. Bit old for you though isn't she?"
Alucard smirked at Malfoy, his hair turning into shadows. "A bit old? She's seventy six years old, I'll have you know. And she and I both eat children like you for breakfast."
Malfoy widened his eyes as he realised what Alucard was telling him. He had heard that Harry lived with Alucard and a female vampire, but he had never imagined that this girl was a vampire. He started when Seras stood up and smirked at him, her eyes turning bright red.
"Get lost. No one implies I'm gonna kiss my brother and gets away with it."
Seras' left arm turned into a tendril made of shadows as the entire school watched, and Malfoy ran, screaming like the child he was, leaving drops of urine on the floor as he did. Everyone watched as Seras' tendril took the form of a man, who yelled in a French accent after Malfoy's retreating back,
"You'd better run, you filthy prick! Go piss yourself somewhere else!" Malfoy's performance earned laughs from the entire assembled student body, right before they all applauded Seras.
Seras' eyes returned to their natural blue, and her tendril reverted to its disguise as an arm, the man vanishing while lighting himself a cigarette. Seras smiled sweetly, embarrassed that she had done what she did in public. As Seras sat back down, Hermione patted her on the shoulder, before Harry did the same. That comforted Seras. As long as Harry and Alucard were happy with her, she needed nothing else.
That night, Harry and Seras sat in the common room. Everyone else had gone to sleep, though Alucard was in the nearby wall, listening.
"Thanks for coming, Seras. It's great to see you. Alucard eluded to the fact you might be coming."
Seras smiled. "Of course, sir. What kind of servant would I be if I didn't visit for Christmas?"
Harry shook his head. "You're not just a servant, Seras. Neither is Alucard. You're both my family. I never told either of you this. You're the only family I've ever had. You've really been like a sister rather than a servant, and Alucard is like my father."
Seras looked surprised, but then she laughed in a girly fashion. "Thank you… Harry. That means a lot. The master thinks so too, but he'll never admit it."
They both jumped as Alucard stepped from the wall beside them. They had known he was there, but that didn't make him any less creepy.
"We may be your only family, but that will change, won't it? Do I hear wedding bells with the Granger girl? What do you think, Seras?"
Seras smiled. "That had occurred to me. She seems pretty close to you. And she seems nice."
Harry shook his head. "Hermione and I are just friends. Please, first Seras and now Hermione. Everyone thinks I'm romantically involved with everyone. They might as well start asking if I'm involved with Alucard."
Alucard smiled, changing into the form of a girl. "Well, I can be your type." Alucard still spoke with the same booming voice, which sounded very strange coming from a little girl. Harry shuddered.
"Ditch that form right now Alucard! Bloody hell, that's disgusting!"
Laughing, Alucard reverted to his normal form, sitting on the edge of the couch Harry and Seras sat on. "I was just teasing, master. Anyway, Seras, you should go. The mansion is largely unattended."
Seras nodded. She hugged Harry again, before her arm morphed into the tendril, which rapidly became wings. Seras then dived out the window, flying towards London.
Alucard sat down beside Harry. "I will check the library soon. At night time. Better no one actually sees me stealing the books."