If the dynamic between Yasuo and his cousins does not seem like a normal one, then congratulations, you have working eyes that can read between the lines.
Not that it was very hard to tell.
It started when they were very young. His cousins were obsessed with him, calling him the "most handsome boy in the world" and refused to leave his side for even a second.
It got to the point that he would be sleeping alone one moment, then walk up to both of them on either side the next morning.
Long story short, neither of them was his first kiss or the person he lost his virginity to, but somehow, the day after Yasuo became a man, Suzu had been able to smell the stench of the other "woman" who ruined their relationship even though Yasuo had showered thoroughly afterwards.
From then on, the two of them no longer held back, and by the end of a summer vacation they had taken as an extended family, he had taken both of their firsts. All their firsts.
That was the biggest mistake he had ever made.
It was the one thing original Yasuo regretted. Not because of morals or anything, because to him, they were girls before they were his cousins, but it was because they were so horny 24/7 for him that he felt like he was going crazy.
He would wake up in the morning after school and find that one of them had their cock in their mouth.
He would be taking a shower and one or both of them would walk in. It wouldn't take more than a few seconds for a very wet shower to start happening.
They were also family, so he couldn't separate himself so easily. And admittedly, although he claimed to hate it, whenever he was in the moment, he indulged himself in their bodies so much that they would be the ones who would be sore by the end of it.
Now years passed, and he was finally freed from them after moving cities.
The two girls were so obsessed with him that many victims of his netori fetish had actually stemmed from their friendships. They would find girls who had boyfriends, befriend them, then basically test whether or not they were worthy of Yasuo's attention.
If they passed their test, they would introduce them to Yasuo.
Nobody other than Yasuo knew that these two were like devil wings attached to his back.
He was the devil… but — they made his travel around Hell much easier.
Alone with his mother, he had told the cousins that if they moved an inch from the couch, he wouldn't talk to them for the rest of the year.
"Did you tell them that I was home?" he questioned.
"No. They found out because whatever you did yesterday, someone had taken a picture of you and posted it," his mother responded, taking a sip of her tea. She knew every detail of what occurred in the karaoke bar but didn't expose her hand.
'Momma, I know that you know,' he sighed internally.
He hadn't exactly tried to hide what he was doing at the karaoke bar, so that was to be expected.
It just slipped his mind that his cousins would end up seeing it and catching on to his whereabouts.
But even if he remembered, he likely would've gone about it the same way.
"Okay." He paused. "Then did you tell them about the business trip I'm accompanying you on?"
His mother shook her head so fast that her hair did a little dance.
He sighed in relief, "Let's keep it that way. You know what will happen if they find out."
His mother laughed. "Son, I know. I'll keep my mouth shut. But it's you I'm worried who won't be able to keep your mouth shut."
"What do you mean?"
Why would she be worried about him?
"You know I know your relationship with those two. We had a conversation before and I told you, it's legal to marry your cousin, so if you want to then I won't object."
"I remember, but what does this have to do with me running my mouth?"
"The two of them will likely be in our home for the next two days. That's how long your Aunt is allowing them to hang out and skip their classes."
Their mother was able to get them to listen to most things, such as this.
But the trip Yasuo would be going on soon would likely not be one of them. Two weeks in a foreign country where Yasuo was going to be shirtless for most of it? They would follow no matter what, even if it meant receiving a terrible punishment once they returned home.
"The odds of you not doing the deed with them are about… zero."
Having his mother talk about his sex life made him feel a little uncomfortable.
"I heard from one of them before that you tend to run your mouth wildly when you're… You know."
"That doesn't mean I'll accidentally let out a secret," he shook his head.
She shrugged with a cheeky smile.
"I don't know what goes on in your bedrooms. I'm just a concerned mother hoping the best for you. Because at the end of the day, if they find out, it won't be me who will be affected. It'll be my poor son," she said as she rubbed his hair.
Seeing her son stunned at how snappy her responses were, she decided she was done teasing Yasuo and hugged him.
"Have a wonderful afternoon Son. I'll be on a video call with a client for the next hour but let me know if you need anything."
"...Okay," he responded after a few seconds.
Why did he take so long to respond?
It was because when she had hugged him, he felt something non-fabric pressing against his chest.
Once his mother had left, he reached into his shirt and grabbed the item that touched him.
He pulled it out and looked at it.
A vein appeared on his head.
It was a recording device. One that relayed everything being said to another device.
He thought about when Hinata was rubbing his bare skin under his shirt.
Walking to the living room, the two cousins lit up as they saw him. They were about to say something when they saw the device in between his fingers.
"We can explain…"
"It wasn't my idea!"
"...Did you two hear what my mother and I were talking about?" he asked.
They both shook their heads but he could see the truth in their eyes.
In a single lunge, he grabbed a hold of their hair and began dragging them across the floor.
"Let's head to my room. It seems it's been so long that you two have forgotten my lessons."
"Noooo~!"
"I'm sorry Big Brother Yasuo!"
The two of them looked scared, but between their legs, there was a warm throb that was getting excited.
That was why they had planted the device. They wanted to get caught and punished. What they happened to overhear was just icing on the cake. A lot of icing.
Yum!