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"Thanks, Jinwoo! I'll enjoy this!"

Sora and Sinbi thanked Jinwoo in unison as he sat down next to Sohee.

"Oh...uh...yeah."

Jinwoo awkwardly nodded, taken aback by their gratitude.

"You guys must be really close now. Your brother comes to pick you up from school every day."

Sora, sounding envious, commented to Jinwoo, who looked uncomfortable.

The top two buttons of Sora's academy uniform blouse were open, revealing her large, voluptuous cleavage.

Jinwoo's cock started to react slightly.

"Uh...yeah...there were some circumstances."

Jinwoo replied, his gaze briefly flickering to Sora's cleavage before quickly looking away.

"It's good for siblings to be close! Jinwoo, you should eat some too. Should we order more tteokbokki or sundae? If you're hungry, we can get some ramen."

Sinbi spoke kindly, trying to take care of the uncomfortable Jinwoo, who felt a bit chilled by her words, knowing she was aware of everything with Sohee.

"Ah...it's okay, there's still plenty left. If you need more, we can order more."

Jinwoo answered, feeling embarrassed and unable to look Sinbi in the face.

"Here, chopsticks! Eat a lot, Jinwoo."

Sora leaned forward to hand Jinwoo a new pair of chopsticks.

Her heavy breasts jiggled and appeared even more pronounced, possibly indicating she wasn't wearing a bra.

The sight of Sora's stimulating appearance made Jinwoo's cock begin to swell.

"Uh...thank you."

Jinwoo adjusted his posture and accepted the chopsticks with both hands, avoiding eye contact.

"You don't have to be so formal with me anymore."

Sora said, gripping the chopsticks to prevent Jinwoo from taking them, creating a tug-of-war between them.

"...What?"

Jinwoo's gaze moved from the floor to Sora's body. Her cleavage, visible from the front, drew his attention to her pale, soft-looking skin.

"This is the third time we've met, right?"

Sora spoke, looking down at Jinwoo with a satisfied expression.

"No!...Uh...yes...that's right."

Jinwoo answered, startled, blushing and looking away.

"So you can speak informally to me now."

Sora released her grip on the chopsticks, letting them slide into Jinwoo's hands.

"Ah..."

Jinwoo's cock was now fully erect. He scooted closer to the table, glancing at Sohee for her reaction, but she was looking outside, ignoring him.

"Do whatever you want."

Sohee said in a dry tone.

"It feels weird when you speak formally to me but informally to Sohee and Sinbi. Don't you think so?"

Sora leaned forward and spoke to Jinwoo with a pouty tone.

"Uh...yeah..."

Jinwoo replied, stealing another glance at Sora's cleavage.

"Anyway, you have to practice speaking informally for the group date on Friday, right? You'll be pretending to be a freshman at a prestigious academy."

Sora mentioned the upcoming group date, which Jinwoo knew was an event arranged for their sex diet.

Sora and Sohee would meet their partners and then exchange their acquaintances for relationships.

Jinwoo would naturally have a sexual relationship with Sinbi.

Knowing this made Jinwoo feel both aroused and bitter.

"Uh...okay, Sora noona."

Jinwoo awkwardly used informal speech, his mind filled with mixed emotions.

"If you're practicing, shouldn't you drop the 'noona' and just call us by our names?"

Sinbi teased from beside them, egging on Sora's suggestion.

"What?"

Calling his sister's friends by their names... Jinwoo was once again flustered by Sinbi's words.

"Yeah, we're the same age, so why call us 'noona'?"

Sora added playfully.

Jinwoo looked at Sohee, seeking her reaction. She still seemed uninterested, staring off into the distance.

"Do whatever you want!"

Sohee finally responded, sounding annoyed. Jinwoo felt excited as if he had been granted permission to have sex with both of them.

Sora's expectant gaze.

"Okay...so I can call you by your name? Sora..."

Using informal speech and calling Sora by her name made Jinwoo's cock throb painfully.

"Wow, it feels like we're closer already. Call me by my name too, Jinwoo!"

Sinbi laughed, enjoying the situation.

"Uh...Sh...Sinbi..."

Just calling his noonas by their names made Jinwoo's cock swell, feeling like he was officially recognized in a sexual relationship with them. He covered his front with his academy jacket, finally able to converse informally with his noonas.

**

"But Jinwoo, you decided to join us for the group date after all? You said you wouldn't at first."

Sora brought up the group date again.

"Huh? What do you mean, Sora?"

Jinwoo asked, confused by her words.

"At first, you said you didn't want to, but then you changed your mind, saying you'd do it if Sinbi was your partner."

Sora mentioned something Jinwoo hadn't heard before. Initially, he refused the group date, then supposedly changed his mind for Sinbi. Jinwoo looked at Sohee, who was pretending not to know, eating a piece of fried food.

"What?!"

Sohee snapped at Jinwoo when he looked at her, making him flinch.

"Originally, I was supposed to be your partner, but you said you were too shy, so we paired you with Sinbi instead, right?"

Sora continued. Jinwoo started to understand the situation. Sohee must have lied to switch Jinwoo's partner from Sora to Sinbi.

"Uh...yeah...that's right."

Jinwoo agreed, trying to align his words with Sohee's lie.

"Now that you're close with me too, can we switch back to me being your partner?"

Sora asked with a playful tone.

"No! It's already decided. Jinwoo is mine now, hehe. Besides, Sohee is paying for all this because she feels bad. You can't say that after eating all this."

Sinbi firmly dismissed Sora's playful request.

"Aww..."

Sora pouted cutely.

The pieces of the puzzle were falling into place.

From Jinwoo's seemingly unavoidable fate to Sohee calling him to the snack bar and making him pay.

Sohee wasn't angry about the morning incident.

Jinwoo, hiding his fully erect cock under his jacket, started to think about how he would punish Sohee at home.

**

After leaving the snack bar and parting ways with Sora and Sinbi, Jinwoo and Sohee headed home.

Jinwoo still covered his front with his jacket.

They walked in silence for a while, the awkwardness from the morning incident and Jinwoo's arousal lingering between them.

"Mom called. She wants me to buy some groceries and cook you some meat."

Sohee stopped near the grocery store and spoke.

"Huh? Mom called?"

Jinwoo replied, slightly nervous.

"She said you texted her saying you'd be late to school because of something in the morning."

Sohee questioned him.

"Uh...yeah..."

Jinwoo recalled the texts he exchanged with his mom in the morning.

"You didn't tell her everything, did you?"

Sohee asked worriedly, referring to the morning's incident.

"Why would I tell mom about that?"

Jinwoo replied, flustered.

"Why would you text mom while going to school? Mom called me to check if you were lying."

Sohee complained, sounding annoyed.

"What did you tell her?"

Jinwoo asked cautiously.

"I told her you sprained your ankle while jogging with me. So make sure you go along with it, okay?"

Sohee seemed to have come up with a plausible excuse.

"Okay..."

Jinwoo pretended to limp as he answered.

"You didn't tell her anything else, right?"

Sohee asked just to be sure.

"No, I just told her I had something to do. Nothing else."

Jinwoo reported back to Sohee.

Their mom had apparently tried to verify Jinwoo's morning lie by calling Sohee.

And now she wanted to placate him with meat.

No way...

Jinwoo felt a sense of satisfaction, having gained an upper hand in his game with his mom.

He walked into the grocery store with Sohee to do the shopping.

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