Kazuki was on his way home after a long day of work, tired and a bit grumpy, he hated having to work late on his birthday; it was almost 7, and he was supposed to be home hours ago. He'd tried to call Mani to tell her he'd be home late but her phone was going straight to voice mail. Sighing, he tossed his cell phone to the side as he pulled into his driveway. Strangely, all the lights were off except for the porch light, Mani couldn't be asleep already, could she? Unlocking the door he stepped inside slowly. "Hello? Mani? Aila? I'm home."

"Surprise!"

The lights flicked on, and Aila, and the twins poped out of the blue. A big cake was in the living room, bigger then a normal sized cake. "Happy birthday, dad!" Aila said smiling up at her father. "Sadly...mom was called into work." she frowned slightly. "I'm sorry.."

Mani shifted in the cake, she had to wait a bit longer until they began to cut it.

Kazuki smiled as his children popped out and from the closet some of his and Mani's friends began to stream out to welcome him. "Wow... you guys did all this for me?" He said, beaming as he knelt down to hug Alia and the twins, lifting Olivia into his arms as he beamed up at his friends. "But I can't believe they called your mom into work this late... when is she going to get back home?"

"Nope, she might not be back until the morning." Aila said gently to her father, before looking at the cake. "Want to cut the cake?"

"Well... alright sure. Though it won't be the same without her." As he put Olivia down and approached the cake, Taro came up to pat him on the back and Kazuki smiled, giving him a hug. "Taro! You made it too? Good to see you, it's been a while!" Taro grinned and patted him on the back. "Happy birthday man." He said, handing him a knife, a fake one unbeknownst to him. "Here you go birthday boy, time to cut the cake." Kazuki looked over at the cake in awe. "Wow this thing is huge... Mani really went all out. It's just too bad she couldn't be here..."

As soon as Kazuki put the knife into the cake, she poped out. "Suprise!" she shouted out smiling at him. Mani was wearing a skimpy looking outfit, "Happy Birthday, Kazuki." she said blushing slightly at his expression.

"M-Mani!" He said, turning a bit red and jumping back. "The kids said..." He turned to look down at Aila who seemed positively thrilled with herself for fooling her father. Turning back to Mani, he looked her over slowly, gulping as she moved closer to him. She was dressed in an incredibly skimpy outfit, almost like a playboy bunny. "Wow honey... you really went all out this year, huh?" He said with a grin, wrapping an arm around her waist and wiping a bit of frosting from her face with his finger, holding it up to her lips to taste.

Mani put her mouth over the finger and sucked on it slowly, before pulling away. "Mmm, I sure did..." she said gently looking at at him. "Let's party!" she said trying to get his eyes off of her. She felt extremely embarassed and knew she was going to get 'punished' later on. 

Kazuki leaned in to kiss her, tasting a bit of the icing as he did, rubbing her back lightly as he wrapped his arms around her. "Thanks for all you did, Mani..." He whispered into her ear before they moved to mingle about the guests. "And I love the outfit... think you can keep it on for me when we're all alone later...?" He asked playfully.

"Yes...o-of course." Mani said blushing like mad, and shifting in place. She stepped back from him, and smiled slightly they mingled with each other. As soon as the party was over with and the kids were asleep, she sat down on the couch. "I'm so tired..." she said wrapping herself with a blanket and falling to her side yawning.

 Kazuki sat down beside Mani on the couch, wrapping his arms around her and pulling her into his lap to cuddle up with her. "Hey Mani, thanks for all you did... this was the best birthday I've ever had." He said, kissing her gently on her neck as he hugged her close from behind.

Mani blushed and looked over her shoulder at him. "I-It's not any problem...I'm g-glad you liked it." she said gently to him shivering slightly. "Are you turned on?" she asked turning slightly fixing her glasses as she did.

 "With you dressed like that, it would be hard not to be..." He whispered to her in between kisses as he moved upward, slowly nibbling on her neck and moving up to her earlobe as he took her hands in his, linking his fingers with hers.

Mani trembled under him, moaning gently. "Wait a second, Kazuki...we need to get to our room before we even think of continuing.." she said looking up at him. "Let's go."

"You're right..." He said, standing up and lifting her into his arms, leaning in to give her a long kiss on the lips. "So what made you decide to dress up as a playboy bunny, Mani?" He asked as he carried her up the stairs towards their room. "Not that I'm complaining, but usually you'd be shy wearing something like this around our friends."

Mani looked up at him, "It's your 23rd birthday...I wanted to dress up for you." she leaned her head against his shoulder, "Am I not aloud to?" she asked gently, while play biting his neck.

"Of course..." He said, growing even more turned out as she nibbled at his neck, this time visibly. He made it to their room, shutting the door behind them and sitting on the side of the bed with Mani, tilting her head upwards to kiss her again and slowly beginning to fondle her.

Mani let out a quiet moan in the kiss, leaning back she brought him down with her. "D-Do you feel any older then you did?" she asked swallowing slightly, touching his cheek. "I mean...I dunno." she tilted her head and stared up at him, "You're going to h-have sex with me now, aren't you?" she asked bluntly with a small blush.

"Older? I feel... pretty much the same." He replied, continuing to kiss her as he laid her down on their bed and began to feel her breasts up more roughly. "And yes, that was the plan.. unless you have an objection?" He asked as his fingers found and gently kneaded her stiffened nipple.

Mani flinched visibley as he felt her up. "N-No, no-not at all...it's your birthday." she smiled up at him.

"Well then..." He replied as he continued to fondle her, reaching with one hand over to their bedstand. He pulled a pair of furlined handcuffs from their dresser and dangled them in front of her. "How about a little bit of bondage fun, Miss Bunny?" He asked as he cuffed her hands above her head.

Mani looked up at him, swallowing slightly. "I-I think...that would be alright.." she said gently to him, shifting in place. "B-Be rougher.."

"You sound a bit hesitant... are you sure you're alright honey?" He asked. "We can always save our bondage for another night..." He fondled her more roughly with one hand as another slid down her thigh, gripping her butt as he leaned in close to kiss along her breasts.

"I'm sure, it's your birthday...I'll do...whatever you want me to do tonight." Mani whispered leaning up to kiss him on the lips gently. Before opening up her eyes. "Let's...have a really rough bondage session.."

: "Okay then." He said, smiling down at her after the kiss and reaching across to their bedstand again to pull something else out. "But if it's going to be rough, I might have to keep you quiet... we wouldn't want to wake Aila up." He said with a wink, dangling their ballgag in front of her. "Open up, honey..." He whispered to her, roughly squeezing her breast and pushing the ball into her mouth as she opened it to moan. He buckled the gag behind her head and uncuffed her hands, cuffing them behind her instead as he turned her face down, her butt sticking up into the air. "Would you like me to spank you, you naughty girl?" He asked her quietly, rubbing her butt and delivering a hard smack to her butt.

Mani gasped gently under the ball gag. She glanced up at him, nodding her head. Closing her eyes, she moaned gently under the gag. Shivering slightly, she was already getting turned on.

 Kazuki continued to spank her harder, gently rubbing her butt in between each hit to ease the pain a bit. After several minutes, he took a break from the spanking, turning her over to fondle her breasts. He cupped one in each hand, freeing them from her bunny outfit and squeezing them roughly as he held them up to his lips, sucking and nibbling on her nipples.

Mani moaned out loudly, wiggling under him. Her breasts reacted, she blushed slightly as small squirts of milk came out of her breasts. She stared down at him, shivering gently. She wanted him, but was unable to say anything.

"Wow, you're really enjoying yourself, aren't you?" He asked as she moaned into the gag. The front of her panties were visibly soaked, and he was sure she was ready for him; she spent many nights gagged to keep the noise down and he'd gotten good at discerning what she wanted. He slid her panties down her legs and tossed them aside as he recuffed her hands above her and bound her ankles apart to the bedposts. He stripped himself as well, fingering her to work her up more before pulling out his fingers and penetrating her, thrusting slowly inside her as he gripped her hips and kissing and sucked along her breasts.

Mani moaned out gently yet loudly, staring up at him with passion in her eyes. She shifted against him as he thrusted in and out of her. 

 Kazuki continued to thrust inside her, staring lovingly into her eyes until he felt her inner muscles spasming as she orgasmed, and he soon joined her. He stayed inside her after the orgasm, still hard, though he slowed his thrusting and removed the ballgag from her mouth as he leaned in to kiss her. "Thanks for the great birthday Mani..." He whispered to her.