Thump-thump-thump...
"!!!!"
Just as Kaede reached her climax, the light sound of Suzu's footsteps drifted up the stairs. The stiffened clitoris she was tightly pinching between her thumb and forefinger sent her soaring to the peak, and she forced her weak legs to hold her up, barely managing to smooth down her messy skirt before Suzu arrived... If her sensitivity hadn't been boosted by 20%, Suzu would have definitely walked in on her!
"Did... did you finish the dishes?" Kaede hid her damp hands behind her back, trying to act calm.
Suzu glanced at her and instantly knew her sister had just gotten herself off... Kaede thought she was subtle when she was getting off, but Suzu had secretly photographed her countless times. Suzu had seen that expression—flushed with the afterglow, yet pretending nothing happened—many times. However... her boyfriend was alone with a girl next door, while the legitimate girlfriend was getting herself off in the next room, practically playing music to cheer them on.
Suzu surveyed the room, which showed no signs of being cleaned. "Mhm, done with the dishes. What did you clean, Kaede?"
"Eh, I... I..." The flustered Kaede stammered, unable to speak. Suzu walked up to Kaede and slipped her hand under Kaede's skirt. After a gentle swipe, she held the moist fingers in front of Kaede.
"Is this sweat from cleaning the room?"
"I..."
"They were just drawing next door. Were you getting yourself off, Kaede, by imagining them being intimate?"
Seeing Kaede unable to form a coherent word, Suzu sighed slightly... She was getting off by imagining being cuckolded, even though they were just drawing. If this continued, the consequences were unthinkable. Our plan from yesterday with Rin was right; we must actively find suitable girls to satisfy Kaede's NTR desires. This is the only way to stop Kaede from going crazy, prevent Rin from being truly cuckolded by some strange girl, and ensure the three of us stay together forever.
"N-No, it's not like that!!!" They really were intimate!!!! Mashiro is already farther along than I am!!!! Kaede screamed internally.
The image reflected on the Camera System in the upper right corner had now changed to Mashiro modeling for Rin Ito. Mashiro was sitting on a chair, legs draped over the armrests in an M-pose. With one hand, she spread her pussy lips, revealing the dry "fountainhead" of her pussy and the surrounding cherry-pink petals. With the other, she made a 'V' sign with her fingers beside her eye, while Rin Ito drew on his tablet.
While a shameful expression would have been even better, Mashiro's expressionless, completely defenseless display of her private parts had a unique appeal...
AHHHHHHHH!!!! What am I thinking!?!?!?!
Kaede wanted to smash her head against the wall, but she was afraid they would hear. She had no way to explain to Suzu why she knew they were truly being intimate. She also knew that any explanation would be useless; her 'persona' of having an NTR kink was already deeply rooted in Suzu's mind.
So... she could only nod tearfully, admitting that she was getting off by "imagining being cuckolded."
...
Buzz, buzz, buzz...
The vibration of his phone snapped Rin Ito back to reality. Mashiro's figure was already leaping to life on the screen.
Rin Ito had to admit that he had been completely immersed in Mashiro's body just now... Mashiro was the first girl to model for him in such a lewd pose, openly displaying every detail, every fold and texture of her private area. Observing this up close was a completely different experience from drawing based on internet photos. Furthermore, Mashiro's expressionless, completely unblushing composure gave Rin Ito the illusion that he was in a world of hypnotism or altered reality.
It wasn't just now; it was the same earlier. Except for the physiological gagging and red face when his penis went too deep into her throat, Mashiro's face hadn't turned red once; she showed no hint of shame. For Mashiro, whose world revolved around painting, everything she did was in service of her art. Rin Ito had only entered her mouth; he hadn't entered her body, her mind, or her world.
But that's okay. There's plenty of time.
He picked up his phone. It was a message from Kaede.
[Suzu and I have finished cleaning Mashiro's room. I didn't want to disturb you two while you were drawing. I put a brand new set of underwear for her in the room.]
[I don't know if her luggage will arrive tomorrow. Take her shopping for a few outfits tomorrow and familiarize her with the area.]
Hiss...
A surge of guilt welled up in Rin Ito's heart as he read Kaede's message. What a great girlfriend... She's cleaning a room for Mashiro, while I, her boyfriend, was naked with Mashiro and even dirtied her mouth.
However, Rin Ito's guilt didn't last long before he received a message from Suzu.
[Kaede was just leaning against the wall in Mashiro's room, getting herself off by imagining you and Mashiro (self-cuckolding).]
Ah, well...
While Rin Ito wanted to tell Suzu that her sister's imagination wasn't wrong, he decided against it... His own reputation didn't matter, but it wouldn't be good if they thought Mashiro was some kind of strange girl.
"Okay, you don't need to hold that pose anymore. I've finished drawing." Mashiro lowered her legs from the chair armrests and moved to the drawing tablet. The pussy lips that had been spread open quickly sealed back into a line, restoring her to normal.
"Your turn," Mashiro said simply.
"Uh... how about we continue tomorrow? It's late now, and Kaede and Suzu have already prepared your room."
"No," Mashiro shook her head, looking Rin Ito seriously in the eye. "You won't sleep tonight."
"..."
...
The next day.
A sleepy, groggy Kaede yawned while making breakfast. She hadn't slept at all last night. Rin Ito's Skill Mastery system notifications had been sounding all night, and the Camera System had been active all night. Kaede had also been accumulating Nurturing Points all night, and for the first time, she learned that the Nurturing Points obtained through the Camera System had a daily limit. This limit refreshed once a day, and the limit could only be refreshed once a day. Unfortunately, Rin Ito couldn't refresh the daily limit for her last night.
Although Kaede was in charge of breakfast today, Suzu usually came to help.
"Should I make extra for them?" Rin Ito's window faced Suzu's window. At least until Suzu fell asleep, the light in Rin Ito's room was on. Normally, if Rin Ito stayed up all night, they would make an extra portion for him when making breakfast.
"No need," Kaede pouted. "They should be sleeping now." Not only were they sleeping, but they were sleeping in the same bed! Mashiro had said last night she wouldn't let him sleep, and they literally stayed up all night, modeling for each other! Although Mashiro had tried to comfort Rin Ito and let his body return to a calm state, she gave up after trying with her hand and mouth twice. It wasn't until dawn that the exhausted Mashiro collapsed onto Rin Ito's bed and fell asleep without putting clothes on. The Camera System disconnected after Mashiro fell asleep, so Kaede didn't know if Rin Ito slept with her or on the sofa.
After breakfast, Kaede and Suzu left for school. It wasn't until past 3 PM that Rin Ito was woken up.
He opened his eyes. Before him wasn't the familiar ceiling, but Mashiro's soft, full breast that was a decent handful. The dazzling red nipple was like a delicious candy, attracting Rin Ito's gaze, making him want to bite it hard. He painfully shifted his gaze from the cherry red to the drawing tablet beside Mashiro. The white paper showed a sketch of a flaccid Rin Ito.
Looking down, Rin Ito noticed the blanket covering him had been thrown off. After Mashiro fell asleep this morning, Rin Ito debated whether he should sleep somewhere else. It wasn't that he found the bed too narrow or that he was concerned about being inappropriate, but Rin Ito worried that if he slept on the same bed as Mashiro, he would get hard and wouldn't be able to sleep.
However, the fact proved Rin Ito wrong; the cerebrum could still control the cerebellum. Even after the enhancement from the Nurturing System and pulling two all-nighters, Rin Ito, who had spent a lot of protein from heavy physical activity, couldn't stay awake anymore. After hugging Mashiro like a body pillow, Rin Ito drifted off to sleep.
"Ugh..." Rin Ito stretched, then quickly got up and helped Mashiro put her clothes back on. Otherwise, Rin Ito felt he would be uncomfortably hard again for a while.
But honestly, Rin Ito felt his stamina was much better than before. He had completed seven rounds in the past two days, but Rin Ito still felt very energized and could handle several more rounds easily.
"I'm hungry."
"I'll cook you noodles?"
Mashiro's eyes dropped to Rin Ito's crotch. "It's too little, it won't fill me up, and it tastes bad."
"It would be strange if that filled you up... I mean, noodles. Can I make you a bowl of noodles?"
"Yes."
Rin Ito was hungry, too. Mashiro had at least had some protein since dinner last night, but Rin Ito hadn't eaten anything, only dispensed quite a bit. Without making anything too complicated, Rin Ito cooked a bowl of noodles for himself and Mashiro.
There was no conversation, only the sound of slurping. Mashiro seemed unaccustomed to using chopsticks; the slippery noodles occasionally slid from between the prongs. Each time it happened, Mashiro stubbornly picked them up again. Watching Mashiro's cute, slightly clumsy battle with the chopsticks and noodles, Rin Ito couldn't help but smile.
Speaking of which... setting Mashiro's identity as the female protagonist's distant cousin seemed like a good plot idea. The female protagonist's distant cousin comes to stay, but the cousin is too busy with work or school to look after her, so she asks her boyfriend to help, only for the cousin to end up in his bed. Although the plot is common, a slight gender-flip makes it a rather classic Reverse-NTR plot.
However, Rin Ito preferred to draw a long series rather than a one-shot; a long series would better accumulate popularity and help him make serious bank. Although Rin Ito was a Pure Love author-turned-NTR author, Reverse-NTR was considered a subgenre of Harem by many, which Rin Ito believed wouldn't cause too much backlash from fans.
But what was more important than the genre was the plot. Since it was a long series, he needed a plot plan, but Rin Ito knew nothing about NTR. It was a pity that Rin Ito rarely delved into the Underground world in his past life; otherwise, he could have just copied... referenced plots instead of thinking them up.
But speaking of referencing... even if he couldn't reference others, he could reference himself.