BlueMoon Goddess: Alright guys, the final chapter for this story is here! I want to say thank you all who favored, followed, and reviewed. I'm very happy you all enjoyed this story, so let's get on and see the conclusion of this story.

Disclaimer: I don't own InuYasha, it's characters, or 'Once upon a Billionaire' by Jessica Claire.

Summary: To attend a wedding for a respectable family, Sesshomaru needed an assistant. Unfortunately he got stuck with Rin, a young woman who knows nothing about high society and a human to boot. Though through her eyes, he's starting to appreciate the simple things in life, and maybe even grow feeling for the human woman as well.

Rin was delighted at Sesshomaru's house because it was so incredibly him. She wasn't entirely sure what she'd been expecting, but at the sight of the wall-to-wall shelves, the antique maps framed on the walls, and the piles and piles of books everywhere, she clapped her hands and laughed. "It's perfect."

"It is?" He looked at her in surprise, and eyed his home skeptically, as if trying to see it through her eyes.

"It is." She echoed, when he closed the door. "It looks exactly like I'd imagine a businessman like yourself would live."

He rubbed his jaw, and for a moment he looked embarrassed. "I suppose it does. I only have six bedrooms, one is set up as a library and the other is an office."

"Six bedrooms in New York?" She laughed. "Not exactly slumming it, Sesshomaru."

He moved a pile of books off one table, hesitated, and then dumped them onto another table. "I admit though, I did downgrade a bit. My older home had ten bedrooms plus a guest house."

She smiled, still charmed by the place. There were windows looking out onto vast amounts of greenery, bookshelves everywhere, hardwood floors, high ceilings, and not to mention the gorgeous chandelier. The entire place screamed of someone with elegance and great taste. She loved it already. "There's no point in a huge house if there's only two people for it." She picked up a book and frowned at the layer of dust on it, then looked at him. "Don't you clean?"

"I keep busy enough that I do not do much cleaning. However, I do have people who come in once a week to clean up."

"You're lucky you got a second assistant, then." She teased.

"I did not hire you to clean my house."

"No, you hired me to clean your pipes."

He was silent. She looked up in surprise . . . and found that his face was scarlet with a blush. She laughed. "Come on, haven't you ever heard that expression?"

"Not in reference to me." He rubbed his ear, and she noticed that it was also red. How cute.

"Is your bedroom full of books, too?"

"There's room enough for two people." He said, and she noticed the dazed look had returned to his eyes. He adjusted himself surreptitiously. "Shall I show you?"

That sounded lovely.

Three days later, Sesshomaru was the happiest he'd ever been. He had Rin in his bed, he was back home in his luxurious house, and everything was perfect. Well, almost perfect. His house was currently being turned upside down by her, who was determined to organize things, but overall, he was content. He had the woman he loved in his bed, and he adored her every night for hours. Sometimes several times in one night. Just thinking about his Rin made his dick stiffen, and he got up from his window chair, setting his book aside to go find her.

He found her in the small living room, seated on the floor, cross-legged. She wore her ugly camo pajamas, but he found the sight charming now instead of appalling. She turned off the TV as soon as he came in the room, the smile she turned to him was overly bright. "Hey, you."

"What's wrong?"

She shook her head. "Nothing. You want a snack or something? I was just about to get one—"

As she moved to pass him, he snagged the remote out of her hand and flicked the TV back on. It was a news special about Akira Soto and Lance Salvatore's wedding. He gave Rin a curious look. "Didn't get enough of it back in Japan?"

She shrugged, not meeting his gaze. "I didn't really see the wedding itself. I was just . . . curious, I suppose." She patted his shoulder and headed toward the kitchen.

He swore silently to himself when he saw Princess Sara Asano appear on the TV.

It seemed she had some doubts. He could sense it, and he could tell she was still unsure if he would hurt her again, she was uneasy. He also recognized the look on her face. It was the look she'd worn so often in Japan after he'd hurt her feelings. Guarded, wary… expecting to be hurt at any moment.

He groaned and rubbed his face in frustration. What the hell was he going to do to prove to her that he loved her? To make her feel safe and comfortable with him? He'd told her that he loved her a dozen times a day. She'd never once said it back. He kept waiting and hoping that she'd relax, become more at ease around him, and then she'd realize that she felt as strongly for him as he did for her. But holding back her "I love you" seemed to be some sort of armor for her. That as long as she didn't expose herself fully, she could still escape him unscathed.

He wasn't planning on letting her go, though.

Frustrated, he listened to her putter around in the kitchen. He went in and kissed her on the forehead. "I'm going to do some work."

"All right." She said, and her voice was a little too bright again. "I'm going to straighten up in here."

He retreated back to his office, and instead of heading for the papers on his desk, he picked up his phone. He stared at the screen for a moment, thinking. He could call and ask his father for advice, but then it would lead to a bunch of questions he didn't really want to answer at the moment. So he called Kagome, especially since she already gave good advice before. However, when he called it went to voicemail. Damn. He didn't want to leave a lovesick message, so he tried the one other person he could think of. Inuyasha.

"Hello?" The hanyou answered, on the other end.

"Are you busy at the moment?" Sesshomaru asked him.

"Yea I'm free at the moment. What's the problem?"

Sesshomaru thought for a moment. "I need advice…woman advice."

"Oh, shit, hell must've frozen over. Great Lord Sesshomaru is asking me on advice about women." Inuyasha laughed on the other end.

"Piss off. I would have called Kagome but she did not pick up."

"That's because she's resting at the moment and I turned her phone on silent." He paused for a moment. "Anyway, your advice is probably dealing with Rin, right?"

"Yes. I asked her to move in with me, but she's not happy."

"Why isn't she happy? I thought everything was fine between the two of you." Kagome had gotten a call from Rin the moment she came to New York. And of course, Kagome told Inuyasha.

"Well she's not happy. She's trying to be, but I do not think she trusts me completely."

"What do you mean?" Inuyasha asked.

"The true reason why Rin left before was because she thought I was hiding her because I was embarrassed."

"And were you?"

"Originally? Yes." Sesshomaru answered.

"Ouch, man."

"Piss off. Again." Maybe it had been a bad call to go to Inuyasha for advice. But hell, he was desperate. "You know I am not good with this emotion stuff."

"Yea, I know. Are you still hiding her?"

"Of course not. She moved in, and Jaken thinks she's very nice."

"No one gives a shit what Jaken thinks. I meant, did you make her feel welcome?"

Oh. He hadn't even thought about it. "You mean like introducing her to father and your mother?"

"Exactly. I mean it's been a while since she came back and you haven't brought her around everyone. But look, I'm not going to tell you what to do here. You do what you feel is right okay."

Sesshomaru didn't know what to say. "I . . . see."

"And one more thing."

"What's that?"

"If you love her, I mean really, really love her, you gotta move heaven and earth to show her that you love her. Because if you don't, you're going to lose her. And then life isn't worth living. I'm sure you already know how that feels though?"

He didn't respond, because he really did know how it felt. But it had him thinking. Did Rin think that he wasn't taking her seriously? Was it time to do more? Be more demonstrative? He made love to her every night. Told her he loved her several times a day. They went for long walks in Central Park together, holding hands, even going out to dinner in a fancy restaurant. If that wasn't love, he didn't know what was. But maybe she needed bigger gestures. Something that she couldn't dispute in the slightest.

"Yo, you still there?" Inuyasha asked on the other end.

He thought for a moment more, and then said. "I think I know what to do." He said, then hung up. If he wanted to show Rin that he was serious, then he definitely knew what he had to do.

"Where are we going?" Rin asked, craning her neck so she could see out the window. "And whose house is this?"

"It's a surprise." He told her.

She gave him a wary look and a nervous smile. "I'm not sure I like surprises." Her hand smoothed down her pale yellow sweater, and she fingered the jeans she was wearing, as if silently wondering if she was wearing the right clothing.

"You're fine." He soothed. "There is no need to worry."

"Easy for you to say." She said, and then looked out the window once more. "I've never seen a house this huge house, it's ridiculous."

"It is." He agreed. "It's bigger than some of the estates in Japan."

"Whoa." She breathed as the house came into sight. "That is some house."

She clung to his hand when they pulled into the driveway. He nodded at Jaken and gestured for him to park the car. Then, Sesshomaru exited the car and held out his hand for Rin to take. She did, and they went up the expanse of stairs hand in hand.

When they got to the door, it opened and a beaming Kagome greeted them, surprising Rin. "Hey you two! Come on in, we were just waiting on you."

"Oh, waiting for wait?" Rin asked, but her hand still clung tightly to Sesshomaru's and she didn't follow Kagome in.

"You'll see." She gave Sesshomaru an exaggerated wink that made him want to strangle her, and then headed further into the house. "Come on. We're all out in the dining room."

They followed her through the maze of the house, Rin exclaiming under her breath at the size of the place. He knew the house was intimidating, but now he was questioning the wisdom of this place. He wanted her to feel warmed and welcomed, not more isolated and out of place than ever. So he squeezed her hand. She looked at him, surprised, and then gave him a grateful smile and squeezed his hand back.

In the dining room, there was Inuyasha and two people she didn't recognize, sitting around a table full of food. He immediately felt Rin stiffen, but he put his arm around her shoulders and gently steered her in. "Rin." He told her. "I want you to meet my father, Inutaisho Takahashi, my stepmother, Izayoi Takahashi, and of course you already know Inuyasha."

As he introduced her, both Inutaisho and Izayoi were very welcoming to Rin, and very happy to finally meet the special woman in Sesshomaru's life. Rin responded with a warm smile and seemed so comfortable with them, that Sesshomaru knew this had been a good idea.

It was so obvious now. Taking her to his father's house for the weekly dinner seemed like the most reasonable thing in the world. Showing her that she belonged with him was such a small thing, but he could see from the glow on her cheeks that she was happy. He should have thought of it sooner, rather than see her mope for a week.

He grabbed them both glasses of champagne and pressed one into her hand. She took it from him, smiling but puzzled. "This looks like you guys are about to have dinner."

"We are. It is our weekly family dinner."

"Family dinner?"

He looked at the people in the room, then back at her. "I have something I want to tell you."

Her eyes widened and he saw the uncertainty flash across her face again, though she did her best to hide it. "Oh?"

Sesshomaru soldiered on. "First of all, you know I love you—"

"Oh, I don't believe." Inuyasha interrupted. "Mr. Not-show-his-emotions is starting to get sappy."

Kagome shushed him.

He shot a scathing look at Inuyasha, and then turned back to Rin. He took her hand in his and noticed it was trembling. "Rin, I brought you here to show you that I love and care for you very much." He paused, then exhaled slowly. "And if I have not showed you that enough, then you being here at this family dinner should be."

"Sesshomaru…" She said, her voice wavering a bit.

He smiled at her. "There's something else I have for you as well."

Her brows drew down again. "There's more?"

"No." He looked over at Kagome.

She smiled and hurried forward, her loose blouse just barely hinting at her rounded pregnant stomach. She disappeared down the hall and returned with a small silver tray and a man at her side, who held a camera.

Sesshomaru watched Rin trying to figure it out, frowning to herself. He took the box from Kagome, and then turned to Rin. The box was velvet and oblong and she'd probably recognize the shape, inside it were the Taisho Emeralds. "You wore these once before, at the ball in Japan."

Her smile was small, puzzled. "I remember."

"There's another piece that goes with this set, though, and I want you to have it."

And he opened the box and pulled out a ring. It wasn't the most elegant or dainty of rings. Like the rest of the emeralds, it was very old, square cut, and surrounded by tiny diamonds. It was a beautiful piece.

Rin's eyes widened into saucers, just as the camera flashed in her face.

"I . . ." She stared at the ring. "What is this, Sesshomaru?"

"That…" He said, gesturing at the photographer. "Is a man working on a news article to send home to Japan about you and I." He looked back at her, and then dropped to one knee. "Rin . . ."

"Oh." She breathed, frozen in place in front of him.

"I know I have been an idiot." He began.

"Glad to hear him admit it." He heard Inuyasha mutter in the background.

Sesshomaru ignored him. "And I know you worry that I think you are not good enough for me. So I wanted you to know how much I value you. These people in this room are the only people that have ever mattered to me. And now, you have become another person who has mattered." He held the ring out to her. "And you are the most beautiful, most worthy woman I have ever met and I never considered offering anyone this ring until I met you. Will you do me the honor of being my wife and marry me?"

She hesitated, looking at the photographer. "Why is he here again?"

Sesshomaru leaned in and mock-whispered, "Because your face is going to be splashed on a dozen Japanese papers as the American who captured a demon lord and one of the richest businessmen in the world. I do hope you do not mind the invasion of privacy, but I wanted people to know that we were getting married, because I am rather proud of my woman."

Her face blossomed into a beautiful smile. She crooked a finger at him in that sexy way that made his heart flip. As he stepped forward, she gave an undignified squeal and jumped into his arms.

That evening in bed, after everything wound down, Rin curled her fingers in Sesshomaru's happy trail and felt incredibly content. The rock on her finger now meant that she belonged to him and she loved it.

He'd chosen her above everyone else. Her. Simple, small town girl Rin, and she hadn't even been dressed up and elegant. She'd been wearing jeans and a summery short-sleeved sweater, her hair its usual untamed mass. But he hadn't cared. He'd stared down at her with such love in his eyes as he'd draped the jewelry on her and put the ring on her finger, and the photographer had taken so many photos and asked so many questions that her head had been spinning. And he'd done it in front of his family. He was trying to show her what she meant to him, and she got it now. She really, really got it.

Her hand slid down to his cock, feathering her fingers over it. They'd just had sex a few minutes ago, but she bet she could get him erect again in no time. "Hey, Sesshomaru?"

"Hmmm?" His voice was deliciously sleepy, his hand stroking through her hair as she rested her cheek on his stomach.

Her hand stroked him again, and she was pleased to see it stir and begin to harden once more. Such a delicious sight. She continued to stroke it, enjoying that he groaned and began to pump into her hand.

"Remember how I told you that I wanted to be your employee until I trusted you? Really trusted you?"

He stilled under her, despite the fact that she was still working him with her hand. "I remember."

"Okay. Well, I quit."

A second later, she found herself flipped onto her back in the bed, and she giggled as he pinned her to the mattress, a wild grin on his face. It was so unlike his normal reserved expression. "You do?"

"I do. I quit…I totally, totally quit." She couldn't stop smiling.

He leaned in and kissed her so fiercely that her lips felt bruised, but she didn't care. "That's wonderful."

She grinned at him. "I think since I'm unemployed, I can focus on school. Maybe even write some short stories or something."

"You can." He agreed. "But can it wait? I would love to take you to Paris next month. It is beautiful during this time of year. And then maybe head to Italy or Spain."

More travel? "That sounds wonderful."

His eyes lit up. "You don't mind traveling? I do quite a bit of it for business, but I can hold off if you would rather stay here and focus on school and a career."

"I can wait on school and writing." She snuggled close to him. "I'd rather spend time with you."

"I love you, Rin. I really do."

"I know you do." She said softly, and her fingers stroked down his cheek. He said he didn't know how to show affection, but she was seeing that he was a fast learner.

He kissed her hand and then reached over her to grab another condom off the side of the bed. Then, he leaned in and kissed her fiercely once more as he slipped it on, and she spread her legs underneath him, waiting in anticipation.

When he thrust inside her, she cried out his name with pleasure.

The sex was quick and brutal. Rin bit and scratched at Sesshomaru's skin as he thrust roughly into her, and his fingers sought her clit to bring her to orgasm just before he came a few moments later. Then, panting, they went back to kissing.

"I love you." She said softly into his ear.

"I love you, too." He murmured. "I'm sorry I was such an idiot to you all those times."

She grinned and bit his earlobe. "You'll just have to make it up to me."

"Mmm, I can think of a few ways." He began to move slowly inside her again.

She could, too. She could think of a million ways.

BlueMoon Goddess: And that's the end folks! How did you guys like it? Hopefully everyone was satisfied with the ending. And again, I want to thank everyone who took a great interest in this story. Never knew it would turn out this good! Maybe in the future I'll do another Sesshomaru x Rin fic, maybe, not really sure. But I do have other fics, so check them out on my profile, and until then, see you guys in my next fic! ^_^