Andie woke up to the sound of rain pattering at her window. It was a dark morning, thick clouds smeared over the sun and tricked Andie into feeling that it was much earlier than it was.

With heavy eye lids, she blinked drowsily at the digital clock on her nightstand that repeatedly blinked 12:00AM at her in bold red numbers.

Confused, she reached for her phone, turning it right side up and clicking the button on the side that would wake the screen and display the time.

8:15AM

With a gasp, she scrambled from the bed. Had she ever been late for school before? No—definitely not! She prided herself on her flawless attendance. The power must have gone off last night. It was the only explanation for why her clock had reset itself.

She thumped about her room in a panicked-frazzled state before throwing her door open and barreling through it just as Eric was attempting to enter it.

Andie crashed into her stepbrother who fell back beneath her assault. On the ground, Andie sprawled across Eric's chest.

"Uhm. Good morning," he greeted dryly. Flushed, Andie sat up, straddeling Eric's hips, and heatedly looked down at him.

"I didn't sleep in!" she huffed breathlessly. "My alarm clock reset! I think the power went out last night. It must have, because I didn't do anything to the clock, I swear. I'm always on time for school. This wasn't some deviously-plotted scheme to get an extra hour of sleep, OK?"

Eric was still lying on his back on the floor, his hands out as if he had considered lifting Andie off him, who was still atop him, her hands planted firmly on his chest.

"Andie, what in the world are you going on about? It's Saturday."

Her mouth formed the word what, but nothing came out. She exhaled heavily as her heart continued to thump wildly in her chest.

"Yeah," Eric confirmed with a nod. "It's Saturday."

"Wh...why..." Her adrenaline wearing off, Andie slid off of Eric's hips, her bottom hitting the carpet while one leg remained thrown over his legs.

"Why is it Saturday?" Eric rolled, sitting up some, but not shifting enough to dislodge the tangle of their legs. "Well, Saturday is the day that normally follows Friday...which was yesterday."

Andie glared half-heartedly at the wry smile Eric gave her. "I know how the days of the week work."

"You sure?"

"Yes," she snapped, rubbing the heel of her hand into her sleep-filled eyes. "I just forgot..." Mumbling something unintelligible, she lifted her leg from Eric's and rolled to her knees, all but crawling back into her bedroom.

From his place on the carpeted floor, Eric's head tilted to the side as he spotted the creamy swell of Andie's bottom beneath her little cotton shorts; taking in the pink blush that lingered from the night before.

"Your bottom is still red, little sister," he heard himself say before he even considered the words that spilled from his mouth. "So, perhaps you should watch your tone." His tone was rough and low; the devil in him rearing its ugly head at the sight of his mark on Andie's flesh.

Eric's words halted Andie in her tracks. On hands and knees she slowly turned her head to meet Eric's darkening eyes. She blinked, studying him, seeming to grow smaller before answering in such a pretty demure voice:

"Yes, sir..."

Eric blinked at the sight before him: Andie on all fours, her hips cocked to the side, enunciating the curve of her waist as she arched her back to peer back at him from over her shoulder. Her tousled flaxen hair fell over her shoulder, so only her blue doe eyes were visible.

It was a sight that had a strange affect on Eric, and for a moment, he forgot that she was his sixteen-year-old stepsister.

"Perhaps you need a reminder?" he suggested as he rose to his feet. Andie sat back on her heels, her neck craning as her eyes remained on her stepbrother's. "Hmm?" he pressed as he towered over her.

"I-if you think so," her soft reply drifted up to Eric. Then, she returned to all fours, but only for a moment, before lowering her front to the floor.

Eric watched, his face blank, but his heart pounding as Andie stretched her arms above her head as if she were worshipping something. She adjusted her knees on the soft carpet, leaving a small gap between her thighs as she offered her bottom for the "reminder" Eric spoke of.

"What a good girl..." he murmured as he approached, dropping to one knee beside Andie whose head rolled over so she could see him. He studied her as his hand ran up the smooth skin of her thigh. "You're a submissive little thing, hmm?"

In response to his question, she simply nodded. There eyes met and Eric saw a girl without any walls up. Her guard was as down as he'd ever seen it. She was relaxed, comfortable, and wholly in her element.

It worried Eric to some degree to see his Andie like this. She couldn't do this for anybody, he thought to himself. Most men would take advantage of this amazing gift she had to offer; the gift to please. Eric needed her to understand that. If he could show her what was acceptable from her partners, then maybe when she grew up and moved out, she wouldn't fall into the arms of the first person who was willing to boss her around. There was more to it than that, and Eric would make sure she knew that.

But what did he know of any of this?

Deciding that he would look further into it, he pushed the analytical side of himself away, and focused on the pretty sight on front of him.

Andie wanted a spanking and Eric was more than happy to give that to her.

Tugging loosely at her shorts, he revealed the very same black panties from the night before. He listened to Andie's sigh of content, and stole a peek at her face to see her eyes had fluttered shut and her cheeks had blossomed to a cherry pink. Her arms relaxed some, and instead of stretching out high above her head, she bent them at the elbows and slowly drew them down.

"What were some of the rules we talked about last night?" he asked as his hands moved beneath the seam of her underwear, dragging the material further up her bottom.

"Keeping still..."

"And?"

"Speaking up..." her replies were slow and languid as if she were in a dream.

"Good girl... Such a good memory."

"Yes, sir..."

Eric wondered if Andie had any idea what her 'yes, sir's' did to him. He imagined she didn't, just as he had no idea what every little thing he said did to her; but he was beginning to figure it out. She was becoming increasingly easier to read. Her little gasps of pain (that were also pleasure) was the newest thing he had dissected from last night. Even when his punishments were hurting Andie, she still enjoyed it.

In conclusion; his little step-sister had a fetish.

Eric didn't remove Andie's panties this time. In her position, with her back arched and her bottom high, he would be able to see absolutely everything, and he knew they weren't ready for that.

...or if they ever would be; a prospect that disappointed Eric as he considered it. It disappointed him more than he could stomach.

Forcing those thoughts aside, he continued tugging Andie's panties up, providing an extra discomfort as he bared her bottom to the best of his ability while leaving her undergarment in place; thus giving her a wedgie.

Breathless little grunts escaped her and she made the mistake of wiggling her hips. Eric tsked from his placed above.

"Are you moving, Andie?"

She stilled instantly, her eyes opening and meeting his.

"B-but the spanking...it hasn't started yet..."

"You don't think that the second you're in position you should hold absolutely still?"

Moaning to herself, her eyes fluttered shut before she responded with another: "yes, sir."

"Should I spank you for that instead of the little spanking you were going to receive for your reminder?"

"No, sir," she mewled behind closed eyes. "I'll be good, I won't move again."

Pursing his lips, his hand idly squeezed the creamy flesh of her bottom, drawing a gasp from her. He immediately released, shocked with himself for giving into such a...a... sexual... action.

With a deep breath, he shook his head and willed away any feelings of lust. He couldn't do that. They couldn't do that.

...But damn it all, she had enjoyed it, hadn't she? One look at her face told him that she had.

More concerned than ever at what they were doing, and wondering if perhaps they should stop before one of them got carried away, Eric hesitated.

There was a lot to this that wasn't appropriate. But if they stopped, then Andie's unhappiness would return and their bond would struggle all over again. This was necessary—no—imperative to their relationship.

Eric just needed to keep a sound head on his shoulders.

Nodding with determination, Eric shifted his outlook, and delivered the first stinging smack to the bare skin just beneath Andie's black panties.

She yelped, clearly not expecting such a stinging first swat. Swallowing hard—swallowing his emotions down—Eric's hand cracked down on her left cheek. Andie cried again.

"This is your reminder to be a good girl today," Eric explained in a cool voice as he picked up the tempo of his spanking, sending his hand left and right on her upturned bottom.

"Yesssirrr..." she replied through gritted teeth, her whole body tense as Eric delivered a spanking that she wouldn't forget anytime soon.

That was the goal after all, right? Discipline when needed? And discipline was meant to teach a lesson that shouldn't be repeated. So, he needed to make sure that Andie wouldn't want another spanking anytime soon. Then—maybe—the hold this had on them would loosen, and they would regain control of themselves.

"Do not move your bottom," he scolded sternly as her hips jerked to one side in an attempt to evade his punishing hand. She cried louder as she forced herself to hold still, nearly trembling at the effort and control it took to hold her bottom up high as it received swat after swat of stinging slaps.

Andie was just so submissive, she would continue to obey, even if he abused the privileged role she had given him—which is exactly what he felt like he was doing right now.

It was supposed to be a reminder, he told himself, even as his hand continued to paint her bottom red. Why was he torturing them both by trying to scare her away? He was confusing her, he knew it. It started out so trusting, so comfortable and familiar as if they had been doing this forever, and then he fucked it up by overthinking his side of things and pushing them both back to a more appropriate area of their relationship.

She was his step sister for crying out loud! His father left him in charge of her. Her mother trusted him to take care of her. Was this what they had in mind when they wrote Eric's name down on the will? That Eric would take Andie across his knee and discipline her whenever she misbehaved?

Clearly not, and here he was, spanking Andie's bottom scarlet when she hadn't even misbehaved. They just wanted to do it again, like a bunch of irresponsible teenagers who had no control over themselves.

A wail exploded off the walls of Andie's bedroom, tearing Eric from the argument in his head. He froze, struck cold by the sound, and his mind cleared immediately, giving him a clear and unobstructed view of the sight before him.

Andie lay in her original position, front down, bottom high, her eyes closed, her cheeks flushed. Except a whimpering cry continued to escape her lips, and her face was wet with tears, and her knees shook, and her bottom... Eric felt the strength leave his legs and he slumped back onto his heels as he saw how splattered with red was Andie's bottom.

All the while that he had warred with himself, he had been spanking Andie, and she had laid there and taken the whole thing, despite the wretched amount of pain he must have caused her.

"Oh, Andie..." he whispered, mortifyingly ashamed with himself. "Oh, honey, I didn't mean to spank you so hard..."

The strength returned to his limbs just in time for him to lift Andie from the floor and gingerly hold her in his lap. Her arms immediately circled around his neck, and she finished out the rest of her tears in Eric's neck. He felt like shit, but as she took comfort in him, he pushed any selfish thoughts aside, even the ones that negatively analyzed him.

His hand smoothed up and down her back and his fingers tangled in her hair as he crushed her to his chest.

"Oh, baby, I'm so sorry..." he breathed into her golden tresses, breathing in her sweet smell. "I was conflicted, and I was afraid of what we were doing, and I... I got upset with myself, but I didn't mean to take it out on you, I swear."

"I-it wasn't so bad," her voice trembled as she replied.

"Oh, don't say that, Andie. I know it hurt, it's OK to tell me that I hurt you. I know I did."

"It did," her warm breath fanned the skin at his neck. "But it's OK..."

"No, it's not Andie," he breathed, burying his face in her hair as his self-loathing burned higher than ever.

"It's supposed to hurt, isn't it?"

"I don't think it was supposed to hurt that much, Andie."

"But..."

"Please stop defending me, I can't bear to hear it."

Eric listened to her breath as it settled down. Her next words came a minute or so later, and she sounded reliatively normal, albeit a little sleepy and soft-spoken.

"It felt good to cry..."