Chapter 323 (Mom, Se-hee, Se-young, Su-a)
Translator: RaidenTL
Chapter 323 (Mom, Se-hee, Se-young, Su-a)

The number next to the text message in the chat window disappeared.
Se-young and Su-a had both checked Si-woo’s message on their respective smartphones.
Even though they were likely looking at the message together, Si-woo issued his orders as if he were using Se-young as a messenger to relay the lewd acts he wanted Su-a to perform.
'Got it~ I’ll tell Su-a~'
Se-young replied to Si-woo’s command submissively, as if she were being asked to do something perfectly ordinary.
Only a few hours ago, Si-woo had been sending messages with a racing heart, anxiously gauging Se-young’s reactions. Now, he was able to openly direct obscene language and specific, graphic commands at her.
The moment he realized this, a flood of lewd thoughts and scenes involving Se-young flashed through his mind.
This morning, Si-woo had personally chosen the outfit for Se-young’s trip to the department store.
An overall denim dress, orange striped panties, and orange casual socks with a kangaroo print.
Si-woo hadn't picked out a shirt or a bra for her to wear underneath.
This meant that under the overall denim dress Se-young was currently wearing, there was nothing but those cute orange striped panties.
If he ordered her to take off even those orange panties, she would be completely naked under her dress.
Si-woo’s heart hammered against his ribs as he imagined Se-young walking around the department store in that state.
Furthermore, Si-woo planned to have her put those discarded panties inside Su-a’s bag, turned inside out.
His plan was to make Se-young put those panties—now thoroughly soaked with his semen inside Su-a’s bag—back on.
With every step she took, Si-woo’s fluids would be smeared and rubbed against the crack of Se-young’s buttocks, her crotch, and the mound of her pussy.
Just imagining the awkward sensations Se-young would feel while surrounded by people made him feel as if the nectar of dizzying pleasure was being squeezed out from within his body.
'Se-young, you...'
Si-woo typed out Se-young’s name, as if to give form to the scene he had just envisioned.
'Yeah?'
Se-young responded instantly to the text calling her name.
It seemed she was ready to follow almost any command Si-woo gave her without much resistance.
Yet, as he prepared to order her to perform such a perverted act, a thrill of transgressive guilt surged through Si-woo’s chest.
'Take off the panties you’re wearing right now and put them in Su-a’s bag!'
Si-woo hesitated for a moment after typing the message before finally tapping the send button.
That familiar, anxious tension filled his chest once again.
'The panties I’m wearing right now?'
Se-young asked, as if to confirm the order Si-woo had given.
'Yeah! Put them in inside out! Make sure the pussy part of your panties gets plenty of the semen I came in Su-a’s bag!'
Si-woo gave additional instructions, intentionally using blunt words like "semen" and "pussy."
He was commanding her to ensure his semen was well-smeared on the inner part of the panties that would come into direct contact with her pussy.
'Okay~'
Se-young replied without a word of complaint.
Did she understand that Si-woo intended for her to wear those panties, now soiled with his semen, once again?
Se-young, pulling off her orange striped panties and stuffing them into Su-a’s bag to be drenched in semen...
And Su-a, sliding her own panties down to her knees to replace her panty liner with the one from the semen-soaked bag...
Just imagining his two younger sisters following his orders made Si-woo’s breathing grow ragged.
A thrill so intense it made his body tremble washed over him.
Si-woo felt as if he were reaching a mindless orgasm.
* * *
The exchange with his sisters ended with Si-woo’s command and Se-young’s reply.
Si-woo waited, wondering if Se-young might take it upon herself to film a video of her taking off her panties or Su-a changing her panty liner.
Since he hadn't explicitly ordered it, he wasn't certain she would, but he couldn't help but hope.
However, as time passed, no further messages came from Se-young.
Confirming that no videos or photos were coming, Si-woo closed the chat window.
The vibration of Si-woo’s smartphone was still buzzing intensely.
The vibrator Su-a was wearing would also be vibrating at maximum strength.
Si-woo switched to the vibrator control app to check the remaining battery.
On the status bar at the top of the screen, the battery level was flashing a frantic '1%'.
Soon, the vibrator would stop, and Su-a would be liberated from the agony of pleasure.
With a mix of complex emotions and a sense of lingering regret, Si-woo touched the screen, sliding the intensity of the vibrator up and down.
The strength of the smartphone's vibration changed in sync with his finger's movement.
Sliding his finger from the lowest to the highest setting, Si-woo intended to give Su-a one last surge of fluctuating pleasure.
As he moved his finger up and down the screen a few more times, the vibration suddenly stopped.
A notification appeared on the status bar indicating that the connection between the vibrator and the smartphone had been lost.
Si-woo took a deep breath, feeling his tension release, and closed the vibrator app.
His massive penis was jutting out from his clothes, fully erect.
Engorged and red, the veins on his penis throbbed rhythmically.
From the tip, slick and viscous pre-cum leaked out uncontrollably.
Would he really be able to pierce his sisters' hymens today and stir their pussy holes with this massive cock?
Imagining the sensation of the secret, mucosal flesh inside Su-a and Se-young’s pussies, Si-woo once again stroked the shaft of his cock, which was now drenched in pre-cum.
A stinging pleasure and a maddening, transgressive excitement made his body shudder.
* * *
Si-woo considered pulling up his pants and going outside to wait for his sisters, but instead, he opened the group chat containing Mom, Aunt Seon-ju, and Se-hee Noona.
He wanted to check if Mom and Se-hee Noona had seen the messages he’d sent earlier.
The number '2' next to the last photo he had sent still hadn't disappeared.
Mom and Se-hee Noona still hadn't checked his messages.
Feeling a sense of spite, Si-woo took the video Se-young had sent him from the bathroom earlier and posted it to the group chat.
The number next to the video immediately dropped by one.
Si-woo figured it was likely Aunt Seon-ju.
'Se-hee and Seon-mi, you fucking bitches! What are you doing right now?'
Si-woo sent a message to the mother and daughter, checking their status while mixing in profanity.
'What are we going to do with Unnie and Se-hee? They’re going to get in so much trouble when Master gets home~~! lol'
Aunt Seon-ju’s message came in, sounding playfully fawning.
Ignoring Aunt Seon-ju, Si-woo waited for the mother and daughter to read his message.
He watched the chat window for a while longer, but the numbers next to his video and text didn't decrease any further.
Had something really happened to Mom and Se-hee Noona?
A sudden sense of unease began to creep over him.
Si-woo quickly switched to his 1:1 chat window with Mom.
'Mom! Is something wrong with Se-hee Noona?'
Si-woo sent the message carefully, acting as a son to his mother.
He even reverted to calling Se-hee "Noona."
He watched the chat window, waiting for his mother to check the message.
Just like in the group chat, the number next to his 1:1 message remained.
As the minutes ticked by, Si-woo’s worry grew.
He debated whether to call them or ask Aunt Seon-ju to go to the house and check, then he started typing another message.
'Mom... if you’re really not feeling well, we can stop now... the play...'
Out of concern, Si-woo sent a message as if trying to soothe her feelings.
His message sat in the chat window, a reminder that this was a "play" that could be stopped at any time.
He waited a bit longer, but no reply came from his mother.
Just then, a notification sound chimed on Si-woo’s phone.
It was a message from his 1:1 chat with Se-hee Noona.
The preview in the mini pop-up notification said that a new video had arrived from Se-hee Noona.
With a pounding heart, Si-woo tapped the notification to open the 1:1 chat with Se-hee Noona.
He tapped the video thumbnail in the chat, and the file began downloading to his phone.
Once the download was complete, Si-woo tapped the thumbnail again, and the video began to play.
The screen showed Mom, lying nearly half-naked on the bed in the master bedroom.