Somewhere was an office downstairs. It was where Shidou Itsuka would do a lot of his work. There was even a bed to the side just in case he needed some sleep. A little unorthodox, but when it came to his work, better to be prepared as it would be tiresome for Shidou to just go upstairs when he could just sleep automatically on the bed. That was the primary purpose why Shidou needed a bed in the office.

Of course, another reason would be where Shidou and his wife, Rinne Itsuka, would spend some time together. Shidou remembered sleeping with Rinne in this room. And yet another reason relates to now...

"Maah~! Uaah~! Urk~!"

Now, Shidou is intending to sleep with another woman in this room besides Rinne. Sona Sitri. His woman. His only mistress, in this and other lifetimes to come. Shidou was currently pumping his manhood in Sona's rear. Their eyes flashed, both gold and violet. Their clothing was all on the floor, having just removed it again after a nice warm bath. Both of them were standing. Sona was putting her hands on the front side of Shidou's desk. On that desk, there was a picture of Shidou, Rinne, and their daughter, sporting happy smiles. Sona felt ashamed, and yet that shame turned into a sinful pleasure. Her moans echoed throughout the room. Her rear shakes over every single forwarding thrust that she had been given.

Sona felt her breasts being touched and squeezed by her man's strong and rough hands. Her mind was lost in ecstasy, her violet eyes raised upwards, her mouth forming an "O" as her breathing felt erratic. She felt her hair now being tugged, bringing her face upwards. Her man was using his left to bring her slim back arching a little and squeeze her breast in an embrace. The other right, he would use to tug her hair. The thrusts were going too fast. Sona felt each impact which made her scream a little with an "Ah!".

She felt so horribly good. She didn't want the thrusts to end. Her man had fully dominated her, body and soul. She was having sex with a married man. Her guilty pleasure. Her passionate and sinful desire. Oh yes, she thought, punished this sinful woman, the one who had come into your life, and had now drawn his heart away from his wife and daughter, to focus exclusively on her, on this very night.

"HUAH~!" Sona felt a climax happened as littered sperms plunged into her womb. Shidou had given her his love again. After a few moments of the two taking deep breaths, Sona felt her hair getting tugged a little, her face going upward.

"Mama, I want you to go down for me," Shidou whispered to her right ear, a suggestion that felt more like a command.

Sona complied as the state of her lust overtook her. She felt her man's livelihood leave her chambers, much to her reluctance. Her man would position himself on the side of the desk while she slowly lowered herself down. Seeing the exposed flesh, with a length that made her thirst, she happily consumes it, holding it with one of her hands as she does so. Shidou gritted his teeth a little, feeling a euphoria of pleasure and a cool breath that came from Sona's mouth. Shidou would hold the back of Sona's head as it syncs with her rhythm of pulling her face back and forth.

"...It's delicious, hmm, hmph~!" Sona spoke deliriously in between her breaths while consuming her man's soft-hardened skin, smelling and tasting the bittersweet odor, clouding her mind as she continued to draw her strength on, making slurping sounds. Her violet eyes looked upward, drawn to her imaginary fantasies and ecstasies, only focusing on satisfying her man, a husband who was now making love with another woman besides his wife, that was Sona.

After the numerous thrusts that Sona inflicted on Shidou, a burst came forth into her mouth, life-giving seeds that now entered into her through his erected flesh, with her face blushing red, her eyes shining with lust and ecstasy. With no hesitation, she cleaned her man's lengthy sword with a submissive and lustful affection. Shidou gritted his teeth, feeling the pleasure ascending to his mind.

After cleaning it, Sona would remove her mouth and gasp for breaths, looking at Shidou as her tongue still teasingly licked at the pinkish tip of his manhood. Shidou looked at Sona, seeing her lustful appearance, and got attracted to her sexy figure. Shidou would suddenly lift Sona up by her arms, carrying her like a princess as he helped her to go over inside him again, making her moan with an "O" as her eyes flashed with a violet hue.

He would start to move a little, walking. At that time, he would keep himself steady as he felt the aggressive smacks from his mistress, who is hungry to pound through his crotch with a lustful expression. Shidou's eyes turn gold as a desire to impregnate this woman is strong. He plunges towards his mistress, with his mind only focused on her. The way they both moved was like a dance. Sona's arms were locked onto Shidou's neck. Shidou would carry Sona as he touched her rear cheeks, massaging them with a passionate desire.

Shidou walked around for a bit while thrusting Sona too much, with force, with precision, as their mouths, tongues, and breaths collided. He could feel the sweat of his skin drip from his body, colliding with his mistress' sweat. He felt her breasts touch and rub his torso which urges him on. Then he moved the office chair away a little as they now find themselves on the opposite side of the desk, where Shidou's family photo was shown.

Shidou spoke with gritting teeth. "Mama, I'm letting you go for the moment, turn around for me."

Sona complied as she reluctantly stopped her thrusts and felt Shidou gently lower her, her feet touching the ground as she turned around, placing her hands on the desk as she felt her man plunging inside her once more. Her mouth opened wide with an "O". Her eyes now turned towards the photo that was clear for her to see. A family full of warm smiles. Her heart sparked with guilt as she was now indulging in a darker feeling of passion. Her heart felt the desire to be punished for one's sins.

"...Papa," Sona spoke with a sultry tone, grinding her rear to Shidou's crotch. "...Punish me, papa~! I'm...I'm such a bad girl~!"

Shidou responded by massaging her breasts with his bare hands. "But I'd like you... to punish me too... mama.. since I'm such a cheating bastard right now..."

"Ugh~! Umm~! Nooo~!" Sona slurred her speech, her mind lost in passion and ecstasy, with her right hand raised to her man's right cheek, whose face is now resting on her right shoulder. "...Punish me instead, papa, punish me~!"

"Uah! Mama! I'm sorry, but you're just so good!" Shidou spoke with delirium, focusing all of his energies on pumping this sexy woman who was now being very submissive to him.

"But... But I'm only good if you are, papa~!" Sona spoke, shaking her rear so hard.

"Tben you're good enough for me, mama, now shake your body for me, shake it like you want me to," Shidou spoke like thrusting Sona harder and deeper, making her moan.

"Uah~! Papa~! Uaah~! Aha~! Ah~!" Sona spoke as her eyes flashed violet, and Shidou's eyes flashed with gold. Sona glances at the family photo of the Itsukas which adds to Sona's incentive to push through her rear and grind it for her man. Her thoughts formed a silent apology for Rinne and for Rio as she was now having sex with the father of the family in front of their photo. It just felt so good and so bad.

Then another climax happens and Sona felt a sprout of love ushering forth from her insides. She felt Shidou embrace her as he thrusts deep into her womb, releasing everything that he has into her. Sona's violet eyes felt like glowing hearts as lust overtook her. Their breaths were in sync as they tried to grant themselves some air.

"...Are you...tired, mama?" Shidou asks, gently and suggestively.

"...Umm...A little..." Sona spoke honestly.

"Then, let's take it to the bed, is that alright?" Shidou asks.

"Hmm," Sona hummed positively as she and Shidou kissed each other with passion and teasing tongues.

Then they would slowly drop to the bed. Sona would rest her head on the pillow nearby, her glasses were now disappearing like magic and only her face could be seen, her rear was exposed, raised for her man to fill in, and he did, making her moan. Now, he was inside her once more as he began to pump into her like crazy. Sona would embrace the pillow as she felt her rear being pumped through by her man. She can feel his strong hands massage her waist as her rear vibrates with the hard thrusts. She can feel her man bend down a bit to kiss and softly bite her shoulders, feeling his manly thrusts do her in.

Sona couldn't take it. The pleasure was too good.

"Pa-Papa...~!" Sona exclaimed. "Papa~! Please, I~! I want to face you, papa~! Ple...ase~!" Sona begs.

Shidou would stop his thrusts, removes his manhood, and make Sona turn her body around. He first consumes one pair of her breasts, gets the other breast, and finally reaches her lips to kiss her passionately, with her arms wrapped around the back of his head and neck. Sona would find herself being lifted up, with Shidou carrying her body and supporting it, and positioned her body to insert deep inside him, resulting in Sona exclaiming with moans before getting shut up by a passionate kiss. Shidou feels his woman's rear cheeks and massages them to stimulate the thrusts.

Shidou thrusts deeper and deeper into his mistress who has now comfortably taken her seat along her throne that was his manhood, with her tongue wagging and begging for his mouth and for his seed. Sona was his eye candy. His sweet woman who would do anything for him. He felt so very fortunate that he wanted to continue to prolong the sexual experience.

It seems that so many hours had passed for Shidou. He had been thrusting into his woman for so long. He embraced her as he felt her soft breasts converging on his torso and rubbing it. He could feel her passionate kisses, licks, and teases. He could see the woman's sultry expression, the expression that desires him and his manly urges. The woman who has now become a part of him. A woman he can never let go of. He needed to go faster. And so he did. He went fast, and so did his devilish mistress, who was trying her best to control her screams and moans accordingly.

Her moans excited him further. Her body movements excited him further. Sona Sitri, the woman who had now become his mistress, his sexy mama.

And after a while, another climax ensued, causing Sona to moan in pleasure, with her face touching Shidou's face, feeling her breath. Her violet eyes glowed like lustful hearts as she felt juices and other liquids mixed. Sona felt her drops of sweat cover her and her man's body. After taking deep breaths, she reaches to her man's lips and kisses him passionately as a reward. Then they would slowly fall down to the bed while still connected. Shidou would, in his kissing intervals with Sona, grab the blanket nearby and cover himself and Sona with it.

Shidou and Sona continued to passionately kiss one another before they eventually succumbed to sleep, basking in each other's warmth.

The following morning came. Rinne slowly woke up from her slumber, with her daughter at her side, but no husband. Rinne remembered. Her sadness and resignation slowly came back. As of this moment, Rinne Itsuka was not the only woman in her husband's life. Another woman had become a part of her husband's heart too.

She would kiss her daughter on the forehead and stand up from the bed. She would head downstairs and intend to make breakfast. Though before that, she would try to look for Shidou in the house. Her husband was probably with Sona, so she would find her too. Her first thought was to head towards the office room, her first hunch being that since that room had its own bed, not to mention being far away from Rinne and Rio's occupied bedroom, that was the first place that she thought about.

Rinne was standing at the door. Her expression was hesitant, weary, and sad. Her hands were placed on her heart before she took a deep breath, steeling her resolve. No matter what she may see, she would still resolve to support her husband and his relationship with Sona. She knocked on the door.

"Papa," Rinne spoke with a smile. "It's me, mama. Can I come in?"

No response. She waited for a few moments. Then a response came in.

"Rinne?"

It wasn't Shidou. It was Sona instead.

"Sona-chan?" Rinne spoke, with her heart growing heavy. "Umm, is my husband there with you?"

"Hmm," Sona confirmed. "Though he's asleep at the moment."

"Can I come in, if you don't mind?" Rinne asks.

"...Of course," Sona responded hesitantly.

"Hmm, then I'm coming in," Rinne said.

She would slowly open the door. The door was locked of course, but that was not a problem for Rinne who could simply open it through the usage of her powers as a Spirit. She went in to find Shidou and Sona, lying together on the same bed, with most of their naked bodies covered with a blanket. Sona wasn't wearing any glasses, showcasing her natural beauty and face. Their clothes were scattered on the floor, indicating to Rinne that they did indeed make love with one another, with her heart growing lower.

Sona lay her breasts on top of Shidou's exposed torso, covering it. Her left hand was also placed on the man's torso as well. Rinne noticed that Sona's eyes looked a little tired, which made Rinne guess that she and Shidou had been at it the entire night. Sona looked contrite, hesitant to look at Rinne's eyes while subconsciously embracing Shidou's sleeping figure, as if fearful of letting go.

Rinne smiled sadly. Her heart hurts upon seeing something like this. "...Umm, how...how was it?"

Sona looked at Rinne hesitantly. "...It was...umm, an experience. Quite...good. It...umm, took us the entire night, hence why Shidou is currently sleeping," Sona spoke carefully. Truth be told, Sona definitely enjoyed the entire night. As much as she did not want to admit it, she loved, adored, and desired the way Shidou had handled her. Her instincts became submissive every time Shidou thrust his flesh inside her sacred chambers. She loved the way he kissed her while thrusting inside her. She loved the experience. She loved it all. And that made her guilty.

"...I...I see," Rinne spoke, clapping her hands and smiling, yet it was a little broken and exasperated. "Well, he is a man after all. He probably needed to release all of that... umm.. desire for you. It must have been a part of his stress, so I don't blame him for, umm, getting it on with you. And umm..."

Rinne sported a concerned expression on her face. She bit her lip for the moment She crossed her arms, feeling a little cold and uncomfortable due to seeing her husband like this with another woman, even if it was with Sona.

"...Sona-chan," she smiled, though it wasn't a smile so much as her trying to smile. "I... Forgive me for this, but... I'm planning to..." Rinne shakes her head. "No, I will spend time with my husband today. Sorry, Sona-chan, but... I want to be selfish right now. I... I just... I want Shidou to make love with me too..."

"Rinne," Sona spoke, looking at Rinne with a concerned expression.

"That's why... Sona-chan, I want you to handle Rio for the time being. You're also in charge of putting her to bed sometime in the evening. I want my husband to stay with me then. Please..."

"Rinne..." Sona's concerned expression never wavered. "...Of course, you can spend time with Shidou for the day, he's your husband. He's already satisfied me too much throughout the night, so I do not have any problems with what you want. The next night would be your night from now on."

"Hmm, thank you, Sona-chan, that's all I asked," Rinne spoke with a sad smile.

"...Umm," Sona spoke, making Rinne look at her. "...Umm, Shidou, he... he called me... mama... while he was making love to me."

Rinne sported a surprised look, her heart feeling like it dropped. Then her expression turned to a sad smile. "Hmm... Is that so... Well, that's a good thing, isn't it? It means that you're... my husband's..." Rinne couldn't finish the sentence, becoming a little silent. "...That's right," she continued, trying to forcefully cheer herself up. "Yes, you're part of our family now, Sona-chan, that's a good thing."

"With the way you said it, Rinne, I feel like it's not," Sona could not help but point out.

"Umum," Rinne shakes her head. "It's alright. We both had an agreement about this and I'm not going to go back on that. I wish you to experience the same happiness I had with my husband." Rinne smiled as she headed to the door, opening it a little. "Well, I should probably make breakfast for Rio right about now. Until then, I'll let you handle my husband in case he wakes up."

Rinne would lock and close the door, leaving a troubled and contemplative Sona.

Sona thought. No, nothing's alright. Rinne, I can definitely tell that you hate seeing Shidou with someone other than you, and it hurts more that it had to be me of all people. You just tried to hide it too much.

Sona would feel that this would prove to be a problem. Rinne's trying her best to be in self-control, but Sona thinks that there would come a point where even Rinne would possibly say enough and want to have Shidou all to herself, even if it was selfish of Rinne to do so. Sona would not blame for it actually and would understand why Rinne would feel possessive of her husband.

Shidou was Rinne's husband, not Sona's. Sona was but a mistress who had invaded the family tree. Before she came along, it was only Shidou, Rinne, and Rio. No one else was included on that list. Then Sona came and Shidou fell into temptation, making love with Sona and began an affair with her. A few days lasted before Rinne eventually found out.

No, Sona thought. She cannot allow herself to be the one who would break down this wonderful family. However, she also believed that Shidou wouldn't allow that to happen either. It wouldn't hurt though to remind her man to focus on his wife more, the same as what he is doing with Sona now. And that is what she would do when her man wakes up. Sona owes Rinne too much, having given even her own husband to her. The least she could do was pay that back.

Shidou woke up a little late in the afternoon, the time already setting to the night. He noticed that Sona never left his bedside and had woken up first, already in a full set of clothing, showing her professional aura and demeanor, a sharp contrast to her lustful and submissive state from before. After greeting her with a late afternoon meaningful kiss, one that lasted a little longer, Sona would speak with him about Rinne. From this day forth, Shidou would now focus all of his attention on Rinne. She has more than earned it after Sona indulged in her guilty pleasure and reward.

"...My king," Sona spoke with loving affection, covered by a slightly strict tone as she caressed her man's cheek. "I am always here to make love with you wherever and whenever so desire. However, I don't want you to forget about your wife just because you now have me."

"I would not think of forgetting about her," Shidou spoke firmly. "Actually, that's something I wanted to talk with you about, mama. I want to spend time with my wife during the next night."

"Hmm, Rinne told me the same. She wanted to spend time with you, and I believe that she wants to give you her love as much as I gave you my love... and my sins. Go to her, I'll take care of Rio for the time being," Sona spoke, distinguishing her complex feelings of love and lust for her man.

And so Shidou did. As he woke up, wearing his clothes that he discarded from the floor, with Sona using her magic to clean them up instantly of any dust. Shidou decided to walk towards the living room, seeing a sad smiling and reminiscent Rinne who was glancing at a photo album that showed pictures of the family before Sona had entered the picture.

Regret suddenly entered his system. Shidou would automatically head towards Rinne, secretly and quietly, before his arms were raised to envelop Rinne with a hug, somewhere on her back, much to her surprise and slowly forming mood of happiness.

"Ah, papa," Rinne smiled cheerfully, compared to the other times of the day. Loving, warm, and affectionate. A pure kind of love that held a deeper meaning. One that was different from Sona's lustful gaze. "You're finally awake. You slept like a log, you know?" she joked.

"I'm sorry," Shidou apologized, with a double meaning.

"Hmm," Rinne shakes her head. "At least you had some rest. Don't worry about Rio, Sona-chan and I took care of her while you were asleep. Oh, would you like something to eat first?"

Shidou replied. "No..." He would raise his face towards Rinne and kiss her, with her eyes sporting a surprised look, before she melted into the kiss.

The way Shidou kissed her was tender, loving, and contrite, in contrast with his French-like kisses with Sona. He wanted to love Rinne and focus on her right now. His arms wrapped around Rinne, with the latter placing her hands on her man's strong arms. Her love sprang high within her heart as joy came back into her thoughts. She missed it. The soft warm kisses of her husband. The husband who had always loved her.

Their faces turned a little, left and right, enjoying each other's kisses as their breath felt taken away, before they eventually stopped and looked at each other.

"Actually, I already have a meal right in front of me, one long overdue, and one that I'd want to spend more time with. Is that fine?" Shidou spoke with a contrite expression, his hand caressing his wife's cheek.

Rinne would slowly cry a little, her smile turning bright, as she hummed as she closed her eyes. "Hmm... It's fine, papa. I really want to spend time with you too."

"Then..." Shidou spoke. "Let's take a bath together first, somewhere upstairs, on the third floor."

"Hmm," Rinne smiled happily.