He was suspicious. He was very suspicious. He decided right then and there.

'I need to investigate. I need to raid her room later when she is not there. I bet she is hiding something.'

Marine stood there, her arms crossed tightly over her chest. She was using her hands to cover her perky, bouncing boobs because she was still half-naked. She looked bashful. She looked shy.

"You can leave now," Alex said, waving his hand dismissively. "Go put some clothes on. And don't steal my shirts again."

Marine paused. She didn't move immediately. She hesitated for a long, lingering moment. She looked at him one last time with those big, wet puppy eyes, hoping he would change his mind and grab her again.

But he didn't.

"G-goodbye... Big Bro..." she whispered.

Then she turned around and ran! Dash!

She ran out of his room. She ran down the hallway. Thump, thump, thump. She ran straight towards her own room.

She threw the door open and jumped inside. Bam! She slammed the door shut and leaned her back against the wood, breathing heavily.

Her heart was pounding like a hammer. Boom boom boom.

She looked down at her panties. The blue lace panties were dark in the middle. They were wet. They were soaked with her own juices.

She couldn't take it anymore. The feeling was too strong!

She remembered the book. She remembered exactly what the woman in the book did when she felt this heat.

Marine reached down with her trembling hand. She slid the wet fabric of the panty to the side. Slide. Her fingers found her swollen, wet little button.

'Just like the book said...' she thought frantically.

She began to rub. She began to rub her pussy fast, moving her fingers in circles, trying to chase that amazing feeling she felt on Alex's lap.

"Ahgh~ B-big bro..."

...

Alex sat on his bed, looking at the cheat tab on the system store. He stared at the vibrating panties on the screen of his mind.

"System," Alex asked, scratching his head. "Tell me. You have to tell me. Why? Why is there a pair of vibrating panties in the Cheat Tab? Is this a joke? Is this some kind of prank?"

[Boss, it is not a prank. It is a feature. It is said in the ancient manual that Cheat Items only appear when you are in dire need of that specific thing in the near future. The System predicts your destiny and provides the tool you need!]

Alex frowned. He didn't understand.

'In need? Me? Are you saying I need to wear this pink lace thing? No way! I am a man! A manly man!'

He thought about it hard. If it wasn't for him... then who?

'Is it for Marine?' Alex wondered. 'Is it because of the recent stuff with her? She was acting all weird and horny today. She was acting like she wanted something toy-like. Is this for her?'

[I do not know, Boss. The System does not know the specific target. The ways of the System are mysterious and unknown.]

'Useless System,' Alex muttered.

He closed the interface. Since he had gotten sweaty from the "punishment" session with Marine, he decided to take another quick shower. After the bath, he dried himself and put on fresh clothes.

He stepped out of his room into the hallway. And suddenly, the temperature dropped to freezing point!

There she was.

It was Andrea. His other step-sister.

She was standing there, looking absolutely magnificent. She was dressed in her full office attire.

She wore a tight white shirt that looked like the buttons were screaming for help because her chest was so big. She wore a tight black pencil skirt that hugged her curvy hips perfectly.

She wore black stockings and sharp high heels. Click clack.

She looked extremely hot. She looked extremely haughty. She looked extremely bossy.

She turned her head and saw him. Immediately, her beautiful face twisted into a look of pure disgust. It was the "stinky disgusting look." It was the look you give to a cockroach you found in your salad.

"Eww," Andrea said, wrinkling her nose. "It is you. I stepped out of my room hoping to have a good morning, but now my day is ruined. My day is totally ruined seeing your face. You are breathing my air. Disgusting."

She flipped her hair. Whoosh. She walked past him without even looking back. The smell of expensive perfume trailed behind her.

Alex just shrugged his shoulders.

'Whatever. She is always like that. A total ice queen. One day I will melt her.'

He waited until she was gone. Then, he remembered his mission. He had to investigate Marine!

He ran towards Marine's room. He ran slowly and quietly, like a ninja. Tip toe. Tip toe.

He reached her wooden door. He didn't open it immediately. He placed his ear flat on the door wood.

Splish. Splash.

He heard the sound of water running. He heard the sound of someone humming a happy tune.

'Aha!' Alex thought, his eyes lighting up. 'Water running sound. That means she is bathing. She is in the bathroom attached to her room. She is naked and washing herself right now.'

This was it. This was the golden opportunity.

'Perfect time to infiltrate,' Alex grinned. 'She is distracted. I can find whatever secret she is hiding.'

Alex turned the doorknob very slowly. Creak. The door was unlocked!

He slipped inside the room like a thief in the night. He closed the door silently behind him. The room smelled like flowers and sweet candy. It was a very girly room.

There were stuffed animals on the shelves and pink curtains. It was also a bit messy. There were clothes thrown on the chair.

'Okay, time to find the secret,' Alex thought, rubbing his hands together.

He started searching. He looked in the drawer of her nightstand. Nothing but boring hair ties and socks. He got down on his knees and looked under the bed. Nothing but dust bunnies.

'Where would a stupid, innocent brat hide something important?'

He stood up and looked at the bed. It was neatly made. The pillows were fluffy and pink.

'Aha! The classic hiding spot! It has to be there!'

He walked over to the bed. He grabbed the biggest, fluffiest pink pillow and lifted it up. Swish.

And there it was!

Lying right there on the mattress was a thick, heavy book. Alex grinned a victorious grin. He picked it up. The cover was boring grey and it said "Advanced Biology: Human Anatomy."

'Yeah, right,' Alex scoffed internally. 'As if Marine reads advanced biology for fun. What a terrible disguise.'

He sat down comfortably on the edge of her soft bed. Bounce. He opened the book to a random page in the middle.

His eyes almost popped out of his skull!

It wasn't biology at all! It was filth! It was pure, unadulterated smut! It was a dirty novel disguised as a textbook!

There were pictures. Hand-drawn illustrations of naked people doing the nasty thing.

Men with huge rods putting them into women's holes! And the text! He started reading a paragraph. It was describing "throbbing members" and "wet caves" and "gushing juices."

'Holy shit!' Alex screamed in his mind. His jaw dropped. 'This is what she was reading? No wonder she was so wet earlier! This book is corrupted!'

He was engrossed in reading a particularly detailed scene about a stable boy and a princess when suddenly...

Click. Creak.

The bathroom door opened.

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