17. Ayo! What the sister doin?

It was in the middle of the night.

In a dark room with the laptop's screen as the only source of light, Su-ah sat writing her novel with great focus.

This was her usual routine and she would sleep in the morning and stay up at night.

She was our usual night owl.

And would only come out at dinner time.

But today, she was surprised to see their new neighbor Gunwoo was eating with them and he was even going to stay the night.

This news surprised her and she wondered just how close his relationship with Mia has grown in just a span of a day.

But she had always been uninterested in such trivial matters and didn't care much.

As for Daeho's opinion....

Who cares!

She finally stopped typing and got up to stretch a bit allowing one to see her luscious figure.

"It's too hot."

She frowned as she saw her thin white camisole top had turned translucent being soaked by her sweat and stuck to her buxom breasts revealing her creamy white skin adorned by her sweat giving her an erotic luster.

One could see two pink enticing dots on her chest through her top.

Her entire attire had turned unintentionally very sensual.

It was summer time and even her A.C was not of much use.

"I should get something to eat."

She didn't bother covering herself up as no one would be awake at this time and went out of her room.

Her room was just next to Mia's, and the moment she stepped out of the door, her ears picked up some faint sounds coming from her sister's room.

She grew curious and looked towards Mia's room, only to find that the door was slightly opened, just enough to peek through.

She was a bit hesitant as to what to do but her curiosity forced her to know what was happening.

'Just what is she doing this late..'

She tip-toed towards her room as the sound grew more clearer.

"Haah~..Ahnh~"

*Pak**pak*

Blood rushed to her face as she clearly heard some moaning and slapping sound as she walked closer.

'Is she with Gunwoo..'

She found it possible as they were in a relationship and he was also staying over.

Listening to these indecent sounds, Su-ah felt her body getting hotter and hotter and her breathing turned ragged.

Her heart pounded wildly as she made her way to the door, she felt like she was going to open the pandora box.

She wanted to go back but as if she was possessed she continued towards the room and peeked slightly inside and had her eyes widened.

What she saw inside, she knew she wouldn't forget for her entire life.

"Ahh~ yes! Hnngh~"

She saw her sister completely naked, her knees on the bed with her big ass stuck out in the air as she buried her face in the covers, her body flushed pink glistening with sweat making her look really seductive and hot at this moment.

But what caught her attention was not her, but the man, the most attractive man she had ever seen, who was currently ramming inside her rigorously.

Her face burned hot as her gaze landed on him, taking her breath away as she felt a tingling sensation in her nether region.

She squirmed on the spot as her thighs rubbed together and her alluring pink nipples hardened against her thin top.

Su-ah had never seen such an intense scene in her entire life and she couldn't take her eyes off Gunwoo.

She knew she shouldn't but she just couldn't stop herself.

His body which seemed to be the epitome of perfection with his toned muscles and his tattoo which gave him a dangerous but alluring vibe.

She was getting more and more aroused by the second and her sister's moans which sounded as she was in heaven were not helping much.

"Hah~"

Su-ah lightly bit her soft lower lip, as her hand slowly traveled down her lithe body to her tight shorts and into her wet damp panties.

"Hnghh~"

She could feel the scorching heat that came from her sex as her dainty fingers touched her plump pussy lips which were gushing with juices.

Her body jolted in pleasure feeling her own touch as her back arched slightly, her gaze didn't move from Gunwoo's figure as a lone finger sank deep inside her overflowing entrance, being wrapped by the soft wet walls of her hot cave.

"Ahnn~"

An extremely sweet moan sounded out as she dug her fingers inside, her knees felt weak as they wobbled slightly just looking at the intoxicating figure of Gunwoo, who kept ramming inside her sister like a beast with his huge veiny rod.

Her arousal grew more and more as she imagined herself to be the one in place of her sister.

She imagined it was her ass which was being groped roughly by his big hands as he went deep inside her.

She imagined it was her who was on her knees in front of him, moaning in pure ecstasy feeling his sensual love.

She imagined it was her he looked down on with such animalistic eyes filled with lust and at the same time love.

But then her entire body froze, as she saw Gunwoo's piercing green eyes looking straight into her foggy eyes as she still fingered herself.

Her body trembled when she saw his lips curl into a grin as he increased the pace at which he pounded her sister.

"Ahhnh~!"

"Gunwoo~ yes!"

Mia who couldn't handle the sudden onslaught started moaning even louder as Gunwoo grasped both her hands and kept pounding her intensely, while still looking at Su-ah.

Su-ah's face flushed as her lust grew and her breathing turned hot, two fingers pumped into her steamy snatch as her sweet juices dripped down her sweaty thighs, making a puddle on the floor.

Gunwoo then turned Mia around and hugged her tightly, mashing their bodies together as Mia also hugged his neck and started kissing him passionately as they exchanged saliva.

Mia didn't notice Su-ah, as she was far too down the land of pleasure and just had Gunwoo in her misty eyes.

""Hmmm~ hmhp~!"

She kept letting out muffled moans as Gunwoo simultaneously played with her nipples and kept banging her without stopping.

Su-ah wasn't much better as she held her top up by biting it between her glossy lips as her one hand groped at her round soft boobs, and other still down in her nether region rigorously rubbing the insides of her tight cave.

Her watery eyes glazed over with lust and desire looking at Gunwoo intently.

She was now naked from the waist down as she had pulled down her shorts and panties standing there with her big alluring buttocks thrusted backwards.

"Aahn! Gunwoo, i'm going to cum!"

"Go ahead, I'm also close!"

Gunwoo said as he increased his pace and took hold of her big butt.

"HAhhn~! I'm cumming!"

"Me too!"

"Ahn~!"

Gunwoo gave a last thrust reaching her deepest depth as he shot his load inside her together with Mia who also had a big orgasm.

Mia's body twitched and her eyes were unfocused as she still hadn't come out of her euphoric state.

Gunwoo seeing her like this gently laid her on the bed while pulling out his dick.

He wiped the remnant of his cum which flowed out of her with a tissue and covered her with a sheet as she had almost fainted due to exhaustion.

They had been going for a long time, and even though he could continue, Mia would break if he went on.

They had done it a lot of times in a single day and even thought he wasn't the least bit tired, Mia unfortunately had normal stamina and too much would be harmful for her.

He sighed as he really needed to get some other girls to somewhat lessen Mia's burden.

He looked at Mia who had a contented smile as she slowly fell asleep and smiled softly and bent down to kiss her forehead which seem to brighten her smile.

He could now finally confront their 'audience'.

Gunwoo had already noticed her before she peeked but didn't say anything as this would be help him to slowly slide into her heart smoothly.