Chapter 326 (Mom, Se-hee, Se-young, Su-a)
Translator: RaidenTL
Chapter 326 (Mom, Se-hee, Se-young, Su-a)

'Seon-mi asked me for a favor... but I was worried you'd be mad if I decided on my own like before, Si-woo. Should I tell her to text you directly and ask?'
Se-hee Noona spoke cautiously, as if she were still mindful of how she had been punished by Si-woo earlier for taking it upon herself to give Mom orders.
'Of course you should! Tell Seon-mi to text me herself! And tell her to check all the photos and videos I'm watching, too.'
Si-woo sent the text to Se-hee Noona, fully aware that his younger sisters were looking right at his screen.
The message was sent in a domineering tone, referring to his own mother by her name, Seon-mi.
'Got it. I'll tell her to talk to you directly. Don't be too hard on Seon-mi, though~'
Se-hee Noona submissively followed Si-woo's command.
She added a small plea at the end, seemingly out of concern for Mom.
Was it a daughter's heart worrying for her mother?
Or was it the heart of a superior slave looking out for one of a lower rank?
It was an unfitting request from Se-hee Noona.
Si-woo could faintly sense the perverted and paradoxical family bond that was newly forming between Mom and Se-hee Noona.
* * *
Still holding his smartphone, Si-woo casually draped his arms around his sisters' waists again.
The phone in his hand rested against Su-a's pelvis.
"The burger place should be somewhere around here. Su-a, why don't you look it up on a navigation app?"
Si-woo instructed Su-a to find the fast-food restaurant he had seen on the department store's directory.
"O-okay... I'll... I'll look it up now... Just a second..."
Su-a replied awkwardly. She pulled her smartphone out of her pocket, opened a map app, and searched for the location.
Just a few minutes ago, Su-a's phone had been covered and smeared with Si-woo's semen.
Water marks from where she had wiped it with wet wipes remained on the screen like stains.
As she wiped the phone, Si-woo fantasized about the scene of his semen being smeared onto Su-a's delicate, small hands.
Then, Si-woo thought of his semen that must still be smeared in Su-a's groin.
He felt as if the faint scent of his semen was wafting up from beneath Su-a's dress.
Si-woo's cock suddenly throbbed with enough force to push his bag aside.
"Looks like there are still some stains left?"
Si-woo spoke to Su-a for no reason, just to gauge her reaction.
"Yeah... I was in a hurry to clean up..."
When Si-woo mentioned the stains on her phone, Su-a's already flushed face turned even redder as she answered shyly, looking troubled.
Just then, Si-woo's phone vibrated with the notification sound of an incoming message.
The phone vibrated right against Su-a's pelvis.
Su-a flinched again, startled.
Si-woo patted her pelvis as if to calm her down from the reflexive tremor.
* * *
Si-woo let go of his sisters and checked the message on his phone.
'How much longer do I have to do this?!'
It was a text from Mom, sent in a tone that felt like she was demanding an explanation.
'Do what? Lying on the bed with your legs spread? Or using formal speech with Se-hee?'
Even though he knew exactly what she was asking, Si-woo replied playfully, as if to toy with her.
'I mean drinking water from Se-hee's mouth!! You read all the texts she sent!!'
Mom replied with a text that seemed to carry a hint of a pout or irritation at Si-woo's feigned ignorance.
'Ah, that? Haha. How much longer? I told you to stay like that all day today. Why?'
Ignoring Mom's irritation, Si-woo continued to tease her.
Mom went silent for a moment after his text, seemingly at a loss.
Was she staring at the chat window, wondering how to persuade her son?
After a brief pause, another message arrived from Mom.
'Can't you let me off the hook? Mom has already gone this far.'
Mom pleaded with Si-woo like someone who had already lost all her maternal authority and dignity.
—Even going so far as to use her own humiliating appearance in the video as a plea for leniency.—
'It's not often just the two of you are home together. Doing things like that will help you get closer, won't it?'
In response to Mom's desperate plea, Si-woo wrote back as if he were the one trying to coax her.
After another silence, Mom sent another text.
'It's been hard enough being tormented by you since yesterday morning, and now doing this with Se-hee... Mom is exhausted. Can't you just let it go?'
Mom was finally appealing to him, explaining her plight and situation.
'Huh? Let what go?'
Once again, Si-woo wrote back, feigning ignorance until the very end.
'Drinking water from Se-hee's mouth every time I'm thirsty!! -_-^'
Mom snapped back with a clear sentence and an angry emoticon.
The messages were being sent in a 1:1 chat window with Mom.
Since they had agreed to maintain their mother-son relationship within the chat, it wasn't a problem for her to use an irritated or temperamental tone.
However, Si-woo felt a strange, provocative excitement at the contrast between the submissive attitude Mom showed in the video and the tone she used in their 1:1 chat.
Furthermore, while Mom maintained a fundamentally obedient stance, she was requesting to withdraw a command that was too uncomfortable to continue.
He felt a peculiar sense of dissonance and an erotic strangeness in her sentences.
'Haha. How many times did you drink water from Se-hee's mouth?'
Si-woo continued the conversation, feeling satisfied with Mom's reaction.
'About twice...'
Mom answered his question honestly, as if confessing.
'Did you take a video?'
Si-woo asked, wondering if they had captured the scene of Se-hee Noona feeding Mom water mouth-to-mouth.
'No. I don't think Se-hee filmed it when she was feeding me.'
Mom answered Si-woo's question immediately, without hesitation.
'Then film yourself drinking from Se-hee's mouth one last time and send it! If you do, I'll let you stop.'
Si-woo sent the text like he was offering a deal with a mischievous condition.
'Fine.'
Mom sent a short reply. It was hard to tell if she was annoyed, relieved, or shy...
Her emotions were difficult to read.
After checking her last message, Si-woo put his phone on standby.
He walked with an expression full of superiority.
* * *
Si-woo looked over at Se-young, who was walking in step beside him.
Se-young met his eyes with a look of curiosity.
It was as if she were ready to jump into a conversation the moment Si-woo spoke about the chat they had just seen...
Si-woo gave a satisfied smile and then turned his head toward Su-a.
Until the very moment the screen went dark, Su-a had been stealing glances at Si-woo's phone as he exchanged texts with Mom.
When Si-woo looked her way, Su-a quickly lowered her head and acted as if she were focusing on her own phone screen.
"Did you find the burger place?"
Si-woo spoke to Su-a while fiddling with his phone for no reason.
"Yeah... I think it's right up ahead. Just a little further."
Su-a answered while staring at the navigation map, not looking back at Si-woo.
The burger place Su-a found was a trendy fast-food joint that operated like a cafe.
Naturally, there was no time limit, and it was a place where one could freely charge a smartphone.
Si-woo looked down at Su-a for a moment, then turned his phone back on as if he had forgotten something.
The 1:1 chat history with Mom remained on the screen...
Si-woo scrolled past the chat with Mom and sent a text to Su-a.
'As soon as we get in, find a seat and start charging the vibrator!'
Si-woo texted Su-a instructions on what to do the moment they entered the shop.
The message arrived on Su-a's phone.
Su-a, who had been staring only at the navigation map, flinched and trembled at the message notification on her screen and the sound from the speaker.
She tapped the notification to open the chat and immediately checked Si-woo's message.
'Okay. I'll do as you said, Si-woo Oppa.'
Su-a typed and sent the reply without even looking back at him.
'Is it uncomfortable to walk? My stuff must be all over your panty liner.'
Si-woo wrote the text so she would be conscious of his semen on the panty liner she was wearing.
He was using texts to say things he couldn't bring himself to say out loud yet.
'Yeah... I think it's okay for now.'
Su-a replied to Si-woo's text with her head hanging low.
A sensation that felt surreal once again filled the space where Si-woo and his sisters walked.