A/N: Surprise chapter! This won't be everyone's cup of tea, but it made sense to me, so I wrote it down…

'Tis the season: vampires, blood, and all that :)

Tags: menstrual sex, oral sex, blood, mating instincts

Though Rang was eager to get started on their new bedroom arrangement, now that he'd warmed up to the idea, the arrival of Ga Eul's monthly cycle put those plans on hold.

The first three days were always miserable, she'd informed him, and, true to form, she spent the first day curled up on the couch with her stash of emergency chocolate and her favorite snacks. In the afternoon, she tolerated the presence of Rang's lap underneath her head. And by evening, she had gone to bed even earlier than normal, complaining of stomach cramps and a sore back.

Rang tiptoed around the apartment as he'd always done with Yu Ri during her monthly foray into misery. Not because he was afraid, per se, of accidentally irritating a ticking bomb; it was just that he could only think of one thing worse than a fox with hormone-induced, hair-trigger emotions—once, Yu Ri had launched his own axe at his head when he'd told her to drive him somewhere—and that thing was a human in an equally volatile state.

Ga Eul might not know how to throw an axe, but she had a full arsenal of kitchen knives she was quite handy with. She might enjoy stabbing him over and over with those, calm in the knowledge that they wouldn't harm him, and he preferred not to experience that disturbing scenario.

Her students had been right: she was scary when she got mad. Psychopathic, even.

Unfortunately, Rang had a problem with Ga Eul that he'd never had with Yu Ri.

He really wanted to taste Ga Eul's blood.

It was just...he had tasted it one time, a long time ago when she'd let him make a small incision in her neck. Sweet and sharp, its flavor had suited her. It had flooded his mouth with the mouthwatering quality of melted chocolate, and that had been before he'd tasted other parts of her...and way before he'd begun thinking of her as his mate. He could only imagine what her human blood would taste like now when paired with the taste of her cunt and her natural scent and his own scent that never completely left her, even when she showered. It happened once foxes mated—the transference of scent to one's mate as a warning that other foxes should stay away unless they want to die. Rang hoped human noses were sensitive enough to pick up on it, too. But if not, no matter. He'd scare any hopeful human suitors away soon enough.

But back to Ga Eul's blood—it was so accessible at the moment! No need for incisions.

And she had told him to say if there was something he wanted to try…

Making up his mind, Rang vacated the couch and headed to his bedroom, where he carefully twisted the doorknob and pushed open the door.

Entering the room quietly, he whispered, "Little human? Are you awake?"

"Yes," his girlfriend groaned from the bed. "I can't find a comfortable position," she added glumly, "so I can't get to sleep."

Oh. Maybe he should…

He could put her to sleep if she wanted. He should probably offer that.

Rang felt a small twinge of guilt but ignored it.

He would offer after he asked his question.

And if she agreed to his request, he would offer after he'd done the deed.

If that made him an asshole, well...she should have remembered that he could put her to sleep! She was a teacher; it was her job to remember things!

Eager to fulfill his fantasy, Rang rushed over and sat down on the edge of the bed. Though he was still hot despite blasting the air conditioning and wearing only his boxers and a t-shirt, Ga Eul had bundled herself up like it was winter.

"I wanted to ask if—" Rang cut himself off as Ga Eul winced.

She shifted listlessly around in bed, propping herself up more with pillows, then taking them down again. Finally, she chose to lie on her side and listen to him.

"Hmm?" she asked, a pained crease in her forehead.

Switching on the bedside lamp, Rang quickly revised his sales pitch.

"I wanted to offer...a special pet fox service...to make you feel better." Rang displayed his most charismatic smile. He raised his hand to pet her head but then thought better of it.

"What type of fox service?" Ga Eul yawned through the words.

"The best kind. All you have to do is lie there, and I will give you lots of pleasure and help you go to sleep...with my tongue."

Ga Eul blinked a few times.

"Huh?"

"I mean, you did fall asleep the first time I did it," Rang recalled.

Ga Eul frowned. With visible effort, she maneuvered herself into a sitting position.

"But...that's different. Wouldn't this be kind of...gross?"

"Why? I'm a fox. I like blood."

"Oh...I know, but…" Ga Eul bit her lip, seeming troubled.

"If you don't want to, I don't have to." Rang glanced around the room with feigned indifference. "But I think it's a waste of perfectly good human blood. Plus, obviously, you won't get to cum."

When he looked back down, Ga Eul was squinting suspiciously at him.

"I knew...When you sat here, I knew you wanted something. This isn't about my pleasure at all, is it?"

Rang tried to appear innocent.

"You know, what? Never mind." Ga Eul waved off her own accusation. "I don't care. If it'll make me feel better, just do it." With that, she threw off the covers and flung herself flat on the bed, fully clothed in her cat pajamas. Then she lay completely still, her hands folded over her chest, fingers laced together. "You can get started now," she informed him. "This is all the effort you're going to get from me, so...maneuver away." She gestured to her limp body.

Rang studied her, amused. Ga Eul was many things in bed, but she was never lazy.

"Sorry, what?" he goaded.

"I'm not moving," Ga Eul repeated, almost angrily. "So do your vampire-fox thingy yourself."

Rang stifled a laugh.

He wanted to antagonize Ga Eul further—her snappy retorts were entertaining at times—but he wasn't sure that she wouldn't try to stab him—that is, if she deemed him worth the trouble of getting up to acquire her kitchen knives. In any case, he left the matter alone before it could escalate.

"I'll just get a towel first," he informed her as he rose from the bed.

A minute later, having retrieved a blue bath towel, he gripped Ga Eul's thighs and tugged her to the edge of the bed so that her lower legs dangled. Situating the towel under Ga Eul's ass, he made quick work of pulling off her pajama bottoms, followed by her padded underwear. He set those things to the side and placed his fluffiest pillow under Ga Eul's head. Finally, he knelt on the floor, swung Ga Eul's legs over his shoulders, and surveyed the feast before him.

His mouth watered as a strong metallic tang flooded his nose. It had been months since he'd eaten any human hearts or livers. He'd been occupied with Ga Eul, among other things, and it hadn't come up, but there was also Ga Eul's 'no killing' rule.

Without delay, Rang buried his face in her pussy and breathed deeply.

Fuck, he missed human blood. There was nothing on earth that smelled and tasted so delicious.

Maybe Ga Eul was right; maybe foxes and vampires were related.

Rang mindlessly rubbed his face in her pussy, filling his nose with the scent of her skin and blood. Ga Eul's natural scent was already a tantalizing blend of vulnerability and desire, but her blood struck him first as a food source and, second, as a sign of fertility. It activated his predatory nature and his protective nature at once, in a dizzying combination: Ga Eul was human; Ga Eul was his mate. He wanted to hunt her; he wanted to fuck her. He wanted to rip out her heart; he wanted to give her his own heart so she wouldn't die.

Overwhelmed—equally horny and hungry—he dipped his tongue into her opening, trying to lap up the blood from its source since there were only trace amounts left on her labia. Perhaps, if he stimulated her long enough, more would come out. Even that small amount of blood gave her pussy a more irresistible flavor than usual.

Ravenous, he sucked on her lips. His tongue traced her entire cunt, multiple times, making sure no inch of skin went unexplored, and he might have kept going like that for hours, scrubbing her pussy clean like his life depended on it, had Ga Eul not kicked at his back with her heel.

"Hey, pet fox," she complained, "aren't you forgetting part of your service agreement?"

"What?" Rang rasped, already breathing hard. His cock strained against his boxers. His stomach growled.

"You're not putting your tongue in the right spot," she declared mournfully.

Ah. That spot. Truthfully, he'd been unconcerned with it. Her little nub was inconveniently located at the opposite end from her blood source.

"I'll use my fingers," Rang placated her, rubbing her clit with his thumb.

"But I want your tongue." She tugged on his hair.

"But—"

"Also, since you're down there, you can massage my back for me too." Ga Eul grabbed both of his hands and guided them to her lower back. "Human blood isn't cheap, you know. You have to work for it."

Rang screwed up his face, annoyed.

Human blood wasn't cheap? He'd show her how cheap it could be...

Nonetheless, his fingers slid under her back of their own accord. Stupid mating instincts. He really should just eat her. And not in the way she wanted him to.

Rang dug his fingers extra hard into her back muscles, but it must have been the right amount of pressure because she smiled and gave a contented sigh.

"Mm, yes, right there." She paused as he continued to massage her. "You can start by blowing on it. And then you can make little circles. Um, firm circles. But not too firm."

Rang blinked.

Ga Eul was being quite bossy.

Of course, she did filter her comments less during her period, but he'd never witnessed this phenomenon in bed.

Fuck, he kind of liked it.

Why was bossy Ga Eul even more appealing in real life than in his fantasies?

His annoyance abating, to his chagrin, he lowered his head and blew on her clit as she'd asked.

"Mmm, good fox. That's it. Blow on me." Ga Eul's last sentence slurred together, and Rang almost heard, 'Blow me.'

The fur on all nine of his hidden tails stood on end.

He blew softly on her clit, then harder, both hot and cold air. He massaged firmer circles into her back.

"Mmmmmm," Ga Eul moaned, unusually vocal.

He flicked her clit, and she whimpered.

"Yes, please. Make me cum," she begged. "Make me feel better, Rang."

Rang's hidden tails twitched; suddenly, he couldn't remember why he'd come in the room in the first place. There was only his current action and the sounds it was producing in his mate.

He had to give his mate what she wanted. He had to make her feel better. He had to make her cum.

He swallowed. Then, pressing, his mouth to her cunt, he drew her clit between his lips and sucked.

Ga Eul dug her heels into his back.

"Rang-ahhhhh." Her fingernails scratched his neck.

He shoved his tongue into her clit and circled it, pounding the swollen nub with the tip.

Above him, Ga Eul was breathing hard, but he wanted to make her breathe harder. He wanted to make her scream his name. Inserting a finger, he found her g-spot and began stroking her insides. She was wetter than normal, slick from the blood and her juices. Though he'd never had an interest in doing so with his other partners, he wondered what it would be like to fuck Ga Eul with his cock covered in her blood. Normally, he wouldn't have liked all the mess, and fox blood held no appeal for him, but Ga Eul's blood...If he could smell it while he was fucking her, he wouldn't last two minutes.

The idea turned him on beyond belief, and he tongue-fucked her harder. She clawed at his hair, and her heels dug into his back. Finally, she clenched her thighs around his head and locked him in place, squirming and moaning.

"Rang, please...please...ohhh...oh...ohhh...oh…oh..."

Rang licked her clit as fast as possible. He had to pleasure his mate...pleasure his mate...

"Rang-ahhhhh….make me cum," she cried.

He pressed her little button, and it must have been the right motion because she began shaking and rocking back and forth, her thighs seizing up around his face.

"Rang-ahh...ahh..ahh…" she groaned as she rode out her orgasm, her sex quivering under his lips.

When she finally released him, panting heavily, his face was burning up and sopping wet with her juices. Her juices and...blood, he realized, touching his face. Looking down, he saw blood spilling out of her tight hole, globs of it.

Careful not to disturb her clit, Rang lapped up his reward, savoring its stickiness, the way it clung to his lips and slid thick and warm down his throat. He took extra care to lick her pussy clean again, and soon his mouth was coated in her blood. The sweet scent of it satiated him, and he stroked her cunt affectionately.

He loved her human body so much, especially the wonderfully human things only it could do. Her blood was so appetizing, her skin so easy to mark...

"You know, I do feel better," Ga Eul mentioned, jolting him from his blood-coma. "Thank you. My stomach cramps are gone."

Rang lifted his head to find her staring at him.

"Oh...I'm glad."

"Did you like it? I'm guessing so. You ate a lot." She gestured to his bloody mouth, and he felt self-conscious until she smiled. "I didn't know you would like my blood that way. We could have done this sooner."

"I like your blood from anywhere. I would bathe in it if I could," Rang assured her.

Ga Eul laughed.

"Would you like to do this again tomorrow then?" She stroked his face with her toe. "You can give me an orgasm, and I can give you a treat."

Rang smiled; his little human truly was amazing.

"Well, that is the fox way. A favor for a favor." Lowering his eyes, he drank in the sight of her once more, greedy with anticipation.

"I wish your period was longer." The statement flew out of his mouth on impulse, and when he looked back at her face, he realized how stupid it had been.

If looks could kill, he would have been dead, buried, and in Dokdo shrimp form already.

Remembering the knives, Rang hurried away with promises to clean her up and put her to sleep.

It had almost been a perfect evening.