In a quiet room, a boy sat comfortably on his bed, reading a novel on his smartphone. He had a beautiful face and pale white skin, with hair as white as freshly fallen snow, shining in the dimly lit room. (His hair was white due to a medical condition.) 

As he read quietly, someone opened his room door, and he looked at the person who had entered. "What are you doing here at midnight, big sis?" he asked with a puzzled expression.

But she ignored his question, sitting on his bed close to him, her arm touching his. "Lucas, look at this!" his sister exclaimed. She pointed a finger in the air. "There's nothing, sis. Don't brag at midnight" he become

annoyed because she disturbed him, when he was reading such a good novel.

"What! Can't you see this big, blue-colored holographic screen?" his sister sat on his bed and hugged him, adjusting her position, making him sit between her legs.

"What? There's no screen! I know you're just taking advantage of me," he said, blushing as her soft breasts touched his back. They no longer had a normal sibling relationship; her feelings for him had gone beyond sibling affection. Two days ago, his sister had confessed to him, but he had rejected her. However, she didn't take no for an answer.

"Oh, really? How do you know that?" She licks his ear lightly with her soft, warm tongue.

"Stop it!" he struggled as her lick sent shivers down his spine. He tried to stand up, but he couldn't because her arms were hugging him from behind. He tried to use force to free himself, but she didn't budge.

"Huh? Why are you so strong?" he asked his sister, who playfully smiled as he attempted to free himself. His sister, Lily, was 19 years old, with long black hair that touched her buttocks, a gorgeous face, and a sexy body. She was 6'2" tall, while Lucas was only 5'8". Lucas was only two years younger than her, and although she was taller than him, he knew he was stronger – or so he thought, since he could do more push-ups.

‘How cute my little brother is,’ Lily thought, looking at him struggling to free himself. Then she pinned him to the bed and got on top of him, holding both his hands with one hand and lifting them up.

"So, you can't see that holographic screen?" his sister whispered in his ear, her warm breath tickling him.

"I don't see anything. Let me go! Can't you talk normally?" He tried to free his hands but failed.

"How did you become so strong?" he asked her with a serious expression, looking her in the eyes.

"Okay, that's why I'm here – to tell you about the system," she kissed him on the cheek and let him go. She sat down on his bed, leaning against the room wall.

As Lucas sat down a little away from his sister, her hand grabbed his arm, pulling him and making him sit again between her legs. She hugged him, crossing her arms around his chest, and rested her head on his shoulder. Lucas didn't try to free himself this time, knowing it would be useless.

"Now, tell me how you gained so much strength," he wanted to know, his curiosity increasing.

"Well... as I was closing the curtains before going to sleep, I saw something shining coming from the sky toward me. As it got closer, it became transparent, and then this system appeared in front of me. Somehow, I got some free points that I added to my Strength stat. That's why my strength increased," Lily explained, gazing into the air.

"What exactly does it do? Give you missions or maybe daily login rewards?" 

"Well, I didn't check, but it gave me some free points that I added to my Strength stat," Lily repeated.

"What's the name of your system, big sis?" Lucas asked cutely.

"Curious, huh? I'll tell you if you give me a kiss," his sister whispered in his ear with a sexy voice, making him blush.

"Okay!,"  

His sister let him go. Then he turned around and gave her a little peck on the cheek.

"Now, tell me!!," he tries to act serious, but he even cuter.

"Not on the cheek – kiss me on the lips," his sister demanded, making him shy.

"You didn't say that before," he spoke softly.

"I'm saying it now," his sister replied with an evil smile on her face.

"We can't do that – I have a girlfriend, and we're siblings," Lucas protested.

"Huh? Didn't I tell you to break up with her?" She turns angry as her voice becomes sharper. 

"I like her – I don't want to break up with her, he muttered.

"Huh? So, you like her more than me?" Lily showed a sad expression on her face, with a hint of jealousy and hatred hidden in her eyes that Lucas didn't notice.

"No, no! I love you more. I love you more than anyone else. It's just that we're siblings, and we can't marry," Lucas explained, his cheeks turning red with blush.

Hearing his confession, a smile appeared on Lily's face, and then she pulled him toward herself, embracing him tightly. He didn't even have time to react. Fortunately, she didn't use all her strength while hugging him; she controlled it perfectly. If she hadn't controlled her strength, she might have accidentally harmed him, possibly even crushing or pulverizing his bones.

"I... can't breathe, sis! Let me go!" he attempted to himself from her embrace. 

"I'm sorry, dear. I got a little excited," his sister apologized, releasing him.

"But if you love me more than anyone else, then why don't you break up with her?" his sister asked, a dangerous smile playing on her face, making him scared.

"I queried her to break up, but she said she'll kill me and commit suicide if I say something like that," Lucas revealed, fear evident on his face.

"Don't worry, my dear little brother. Big sis will take care of that bitch later. But now, give me a kiss if you want to know the system's name," his sister demanded, licking her lips.

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