Author's Note: This is the first "What if:" chapter. The best way to describe these would be an AU inside the main story where things happened slightly differently. The prompt for this chapter is "What if Luna's date didn't end when they got home?" I hope you enjoy it.

Lincoln, Lucy, and Luna had returned from the "date" Lincoln had taken his older sister on and the younger siblings went to their room to go to bed. Lucy opened the door to her boyfriend's room and was about to step inside when she noticed Luna was still following them. She looked like she had something she still wanted to discuss with them so they beckoned her into the room. They couple sat on the bed, while Luna placed herself on the desk chair opposite them. The trio just looked at each other for a few minutes before Luna began to speak.

"Do you guys think I'm attractive?" She asked. The question caught them a little off guard.

"Sure you are." Lucy replied. "You look great." Lincoln gave a similar answer.

"As you guys are already aware I've been hella busy with classwork so I haven't really been with anyone while I've been at college" Luna explained. "And I've seen the love you guys share, and the lust. I still can't get that sex tape out of my head. It was so hot!" Lincoln and Lucy turned beet red. "So what I'm asking here is if there's any chance you could share some of that with me?" Luna asked. "Could we have a threesome?"

The couple asked there sister to step out of the room for a moment while they talked about it.

"I don't really mind." Lucy stated, simply. "It's not like you'll fall in love with her too."

"But having sex with my sister is a little weird." He replied. Lucy gave him a look. "You know what I mean!" Lucy took his hand.

"I think she really needs this." She told him. "She needs to blow off a lot of steam, and not just with some random stranger, but the people who care about her the most." Lincoln had to agree with that logic. Honestly he hated the idea of his sisters sleeping with other men that he'd never met. He supposed that that was just his natural instincts as a brother. That didn't mean that he wanted them to sleep with him, but since he was already regularly having sex with one of his sisters he didn't really have the moral high ground to deny the request from another one. He loved them all more than anything in the world and if this was something he needed to do to keep his family happy then he would do it. They called Luna back into the room, and after a quick phone call to Lisa to ensure that her birth control would work on other girls they informed her that they would be happy to help her out.

Lincoln and Lucy helped each other out of their clothes and sat back down on the bed. Lincoln was already at half-mast just from the presence of a naked Lucy, something that Luna found really interesting to watch. The boy could feel his sisters gaze on him. After they felt like she had watched them enough the couple prompted Luna to also undress. She did so slowly. Her boots came off, then her pants. She slipped off her her shirt to reveal a matching set of sexy black underwear. Lucy complimented her on her style. She blushed and started to remove her bra. Her breasts were quite a bit larger than Lucy's. Seeing her younger brother and sister's eyes on them caused her body to heat up and she felt her nipples starting to harden. She quickly bent down to slide off her panties. This was the most interesting part of Luna's short show, because it revealed that her pubic hair was shaved into the shape of a guitar. Lincoln let out a small laugh, but assured it sister that he really did think it was sexy. It was just so her. Grabbing each of her arms they pulled her over to the bed and sat her between them. Lincoln turned her head and placed a series of short, gentle kissed on her lips. The kisses Lucy gave her after him were a lot more passionate. They were setting into their roles for the night. Lincoln was the warmth, and Lucy was the passion. They laid her down on the bed and started to tie Luna's hands to the posts. She looked to the couple for an explanation. Lucy gave her a wicked grin.

"Tonight we're playing a game called "make Luna cum until she passes out"." She said. Luna's eyes widened. It was going to be a hard night.

Luna was tied to her brother's bed completely naked. She pulled against the restraints to test them. Yep, they were tight. She watched as Lincoln and Lucy literally made out over her body. Lucy was gently stroking his cock and one of his hands was making it's way between her thighs when she suddenly slapped it away. Lucy grabbed her brother's hand and directed it between her sister's legs.

"Tonight is for her, not us." She told him before she leaned down to start kissing Luna. Lucy's lips were so intense that she failed to register Lincoln's hands brushing against her pussy. It was suddenly brought to her attention when he slipped two of his fingers inside her. With gentle touches and caresses he explored her insides. She let out a soft moan as he brushed against her g-spot and he smiled down at her. Lincoln grabbed his younger sisters hand and covered it with his own as he directed Lucy's index finger into Luna. Having two people's hands inside her might have been the weirdest sensation she had ever experienced. She moaned again, a little louder this time at Lincoln showed Lucy all the places she needed to hit. He then removed his finger and left her to her task.

"I've never done this before." Lucy told her sister as she lowered her head between her legs. "Everything I know is from Lincoln doing it to me, so I hope I give it as good as I've been given." She gave Luna's lips a few light licks before focusing her attention on her sisters clit. She placed a pair of fingers inside her and started to furiously plunge them in, brushing against her g-spot each time. Luna couldn't hold back the loud moan that escaped her and Lucy abruptly stopped causing the bound girl to give a small whine.

Lincoln held Luna's black panties in front of her face.

"I shouldn't have to tell you that you need to be quiet, right?" He asked. Luna nodded her head. "If you make another noise like that I'm gonna have to shove these in your mouth and fuck you until you pass out." Lucy shivered at the threat. This was a side of Lincoln that she found incredibly hot, even if she wasn't the one experiencing it. Luna said that she would try her best and Lucy started pleasuring her sister again. While Luna was being fingered Lincoln's hands and mouth roamed her upper body. The assault on her pussy while her nipples were being teased and her neck sucked on was too much for her. The pressure built up inside her and suddenly everything tightened at once. She came hard and started to scream in pleasure. Lincoln quickly covered her mouth with his hands. She looked up at him with a slight trace of fear, but mostly her gaze just held excitement. Without a word he shoved the fabric into her mouth and switched places with Lucy. He was lining himself up, ready to plunge into her, when she made a muffled noise that sounder a little like "wait". Lucy pulled the panties out her Luna's mouth to let her speak.

"I've never done this before so I wanted to thank you guys once more." She said. "This really does mean a lot to me."

"Well it's our first threesome too, and you're certainly making it enjoyable." Lucy told her.

"No, I meant this is my first time having sex." The young couple stared at each other with wide eyes.

"So you're still a virgin?" Lincoln asked. Luna nodded her head. It was pretty shocking. She always seemed really laid back when it came to issues of sex and promiscuity.

"And you're totally 100% sure you're fine with your brother taking it?" He asked.

"If you're good enough for Lucy then you're good enough for me." She said with a wink.

"Yes, but I'm in love with him." Lucy said. "If I could marry him I would do it tomorrow."

"I know what you're saying, Luce." Luna explained. "But you and I both know that there is no one in this world who loves us more than Lincoln does." She smiled up at her brother. "I know your love for me is totally different from your love for Lucy. I don't love you like Lucy does either. But I want my first time to be with a man who has always cared about me, and no one is more qualified for that than you." Lincoln leaned down and kissed her.

"Okay, I'll go easy on you to start with, but I swear to god if this turns into some thing where I take the virginity of all of my sisters I am gonna be so mad." He said. Lucy laughed as she placed the panties back in her sister's mouth and Lincoln lined up at her entrance once more.

Lincoln was true to his word. He was very gentle at the start. He eased himself into her slowly and waited for her vice-like grip on his shaft to loosen before moving with an easy rhythm. As Luna's breathing became heavier and her her moans more frequent he moved faster and faster. He still had a threat that he needed to follow through with. He felt her insides coil around him and pulsate and watched her body shudder and she let out a muffled scream indicating that she had just had an orgasm but Lincoln didn't stop. He continued pounding his sister with an extreme amount of stamina instilled in him by Lynn's constant training. Lucy watched on with a mix of envy and lust as she masturbated intensely. She wished so badly that it was her strapped to that bed tonight, but it was still so fucking hot to watch. Lincoln drew out a couple more orgasms from Luna before he could feel his own begin to approach. He fucked her more erratically now as he worked to finish himself off. He felt his pleasure building until it finally burst forth, shooting his seed inside her. As the first shot splashed against her womb she was hit by a huge orgasm and her body suddenly went limp with her muscles still twitching. Lucy untied her sister's hands and removed the gag from her mouth. After a couple of minutes she was roused back to consciousness.

"Did I just pass out?" She asked with a groggy slur. Lucy nodded to her. "I was just fucked to unconsciousness by Lincoln. Wow."

"Wow indeed." Lucy said with a smile. "Now I just need to get him to do that to me."

"I wanna thank you two again." Luna said. "You have no idea how much this means to."

"Hey," Lincoln spoke up, having finally caught his breath. "That's what family is for." The trio just stared at each other for a moment before bursting into laughter. As their laughs died down they settled themselves into the bed for the night. It was a little small but after the ordeal they had just gone through personal space didn't really carry much weight. The three of them held each other with Luna in the middle with a huge smile on her face. Lincoln and Lucy were just happy that they could help their sister out when she needed it most.