Tonight was at first quiet in the Kim household as Namjoon and his older brother Seokjin were home alone. Their parents had left to Australia for a business trip that lasted three weeks, but Jin decided to invite his girlfriend without notice. Joon didn't care if Soo-yun came over because she was a nice girl but Joon didn't think he would ever see her in a different way.

One night Namjoon woke up to get a midnight snack but he had to pass by his brother room to go towards the kitchen. At first he didn't hear anything so he figured they were sleep but after going to get his water and chips... his feet stopped at Jim's door. He heard small whimpers and husky groans, so Namjoon being nosey decided to peek through the small crack of the door. His eyes enlarged when he caught Soo-yun on her hands and knees sucking his older brother off as he laid down. It wasn't the first time he heard them having sex but it was the first he saw his brother girlfriend naked, he could see her pussy as it slowly dripped slick and cum.

Joon's breathing got heavy as he felt his shorts tighten, he gasped as he looked down to see his hard on straining. He gasped a little and ran back to his room but accidentally slammed the door. He laid hisself down on the bed as he rubbed his sweaty face, feeling the slight pain in lower region. He slightly palmed his cock as he couldn't get the image of Soo-yun out his head, he shook his head to get rid of the image. Sadly it wouldn't go away so he decided to take a cold shower.

Joon walked into his bathroom and took off his clothes before going into the cold dark shower. He turned on the jets that made him flinch from how cold it was but soon calmed down since it cooled his hot skin. He tried to stay under the cold water but his cock was still hard proudly standing at 10in. He grunted as he grabbed the base of his cock, slowly stroking himself.

Joon placed his back on the wall as he looked down at his cock slowly stroking it. He closed his eyes where he pictured himself in Jin's place on the bed and Soo-yun gagging on his large cock. Joon slowly breathed out his moans as he kept thinking of Soo-yun's warm mouth engulfing him. Joon leaned his head back on the wall as he started to stroke himself faster, the image of him fucking into Soo-yun was vivid.

He could see himself spreading her legs open as he slide into her tight pussy making her whine. He started fucking into her as she clawed as his biceps, Joon was getting turned on by the second. " he moaned out as he fucked into his hand as if it was Soo-yun's tightness, he knew this was wrong but it felt so right. Only if he knew he had a visitor watching him from the door..

Joon kept stroking his hand while the other played with his balls, he just couldn't stop seeing the pleasure on Soo-yun's face. He moaned out louder, the person from the door got wetter from hearing his deep voice. They started pleasuring themselves with Joon as he kept talking dirty, I mean who wouldn't be turned on from hearing his natural deep tone but knowing he wasn't the quiet type during sex made it hotter.

Joon could now see himself fucking Soo-yun from behind watching her small perky ass jiggle from every hard thrust. His hand was moving faster on his cock as he kept talking out loud, The other person covered their mouth as they squealed from his words. Thankfully Joon didn't hear it cause of how deep his groans were; he spread his thick thighs more as he lightly tugged on his balls. He moaned as he started stroking the tip of his heavy cock.

He could see himself leaving over Soo-yun's small body as he pounded deep into her, he could feel himself throbbing wanting to release. Meanwhile the other person was also close to their climax, Namjoon spoke out.And that was the limit. Both of the people climaxed at the same time, Joon's groaned out and so did.....

The girl squeaked as she saw Namjoon who was standing in all his naked glory. She wanted to back away and run but Joon grabbed her before he pressed his lips onto hers.

And the end of the night they both fulfilled each other's sexual desires... they started doing this behind Jin's back... but he was on it cause he was having a secret affair with y/n. Smirks.

Edited - 6/28/22