Well since I've got a vampire arc in my date a live series and my hero academia series, I'd figure I'll continue the bit with adding a vampire bit here. Obvious slight AU.

Louise stepped into the room and aw Saito sitting in the corner of the room. Taking a deep breath, the pink-haired Noble closed the door and walked over to her familiar, "Saito, what do you think you're doing?" Saito flinched and Louise narrowed her eyes, "A familiar is expected to answer their master when she is talking to them. Why are you locking yourself in the room?" Saito looked up, his usually blue eyes now a hellish red, "Well? Why are you locking yourself in the-"

"Look at me, Louise," Saito sighed as he hung his head, "I'm a Vampire…I was bitten and now I'm a Vampire," Louise frowned as Saito shook his head, "I was bitten…why would anyone want to associate with a bloodthirsty monster like me?"

"I would," Louise spoke softly and Saito looked up and saw the frown crossing her lips, "If you haven't had saved me, I would've died…so…what I'm trying to say is…thanks," Louise sat down beside and hung her head, "I haven't given you a reason to do that, but…thank you, Saito,"

"Of course I wasn't going to let that monster hurt. I'm your familiar, so it's my job to protect you," Louise's eyes widened as she felt her cheeks begin to get warm, "Before you brought me here…my life was hell…my grades were average at best and I barely had any friends, my family belittled me, saying I won't make anything of myself, but now I'm a familiar to a beautiful Noble and I've got some more friends," Louise looked down with wide eyes as Saito reached over and patted the top of her head, "Thanks for summoning, Louise…this weird adventure really changed my life,"

"Well…of course you're grateful, you are a familiar after all," Saito chuckled before his eyes widened and he began yelling in pain, "Ne, Saito, wrong? Are you okay?"

"My body…it feels like it's shutting down!" Louise frowned as Saito hissed, "I can't move!" Louise took her wand and ran it across the skin of her arm, cutting it slightly and drawling blood.

Saito's head shot up with wide eyes as Louise held her bleeding arm out to him, "Drink some," Saito shook his head and Louise narrowed her eyes, "I am your master and I order you to drink some,"

"Louise-"

"I'm not telling you to kill me, just drink some to help replenish your strength," Saito took a deep breath before running his tongue across the open cut and Louise slightly frowned.

Wrapping a clean cloth around Louise's arm, Saito looked up and slightly smiled, "Thanks Louise…your blood tasted really sweet, like strawberries,"

"I…I don't know how to respond to that,"

"It's a compliment," Saito reached up and patted the top of Louise's head, "Thanks again, Louise," Louise slightly smiled before she yawned and leaned closer to Saito, "I guess you're tired," standing up, Saito carefully picked Louise up and carried her to the bed.

Setting her down, he pulled the sheets over the sleeping pinkette and lightly kissed the side of her head before he straightened himself up and took a deep breath, "What's the plan, partner?" he looked back at the talking sword and Derfflinger spoke again, "What's the plan, partner? You know most Nobles are against any beings that aren't human,"

"I would imagine, they don't even like commoners, so I can't imagine what they'd do to Vampires, but…I can tell Louise is different. She wouldn't have offered me some of her blood if she were like other Nobles," picking up the talking blade, Saito flung him over his back and took a deep breath, "But right now I think we should find the bastard who bit me before he can get to anyone else here,"

"And what about the Aristocrat?" Derfflinger spoke and Saito looked back at the sleeping Louise, "You know she'll worry if you're nowhere to be found when she wakes up,"

"Yeah, she'll most likely cast Explosion, but a small price to pay to rid the grounds of that bastard…let's go Derf,"

"Like I have a choice, partner," Saito turned and quietly walked out of the door.

Well…enjoy.