As Shameless as She Is

When Pei Qingyun was seven, he gained a sister who wasn't related to him by blood.

He resolved to become the best big brother in the world. He spent all his allowance buying presents for his little sister, fed her, played with her, and never held it against her when she bullied him.

Years later, they reunited, and his sister seemed to have turned into a delinquent. Heartbroken, he took her home to discipline her properly. He personally tutored her, looked after her meals and daily needs, gave her millions in allowance, and gifted her tens of millions' worth of high-end jewelry...

If there were a national award for the world's best big brother, Pei Qingyun was sure it would go to him.

Until one day, his sister stared at him with burning eyes and said, "Brother, I want to sleep with you."

At that moment, he felt like the sky had fallen...

Chi Jingxin had a brother who wasn't related to her by blood from the moment she was born.

She had found this bargain-basement brother annoying since childhood, and would tease and bully him with abandon.

Years later, when they reunited, Chi Jingxin discovered that the bargain-basement brother she'd once bullied had become a powerful tycoon who controlled a trillion-yuan conglomerate. The two who had once lived under the same roof now belonged to different worlds...

But so what? Looking at her bargain-basement brother's flawless mixed-race face, Chi Jingxin was consumed by desire.

So what if he was a tycoon? If she wanted to play, her big brother would always be her toy.

His little sister teased Pei Qingyun every few days. At first, he was fed up and even wanted to pick a husband for her himself to put an end to her wicked thoughts about him. But no matter who he considered, he couldn't imagine any man worthy of his little sister.

Eventually, he saw the light. No one understood how to take care of his sister better than he did. He was the perfect man to be her husband!

But before he could even say the word "marriage," Chi Jingxin spoke first. "What's wrong with letting me kiss you? Don't worry, I won't keep pestering you. I'll break up with you once I get bored."

Pei Qingyun's face turned icy. He gave her a single word: "Get lost!!!"

No one knew that, at that moment, as furious as Pei Qingyun seemed, he had only one thought in his head: How could he let her get bored of him?!

Mischievous little monster vs. chaste, snow-capped mountain

Both leads are each other's first and only, happy ending

A clarification:

The male lead is the heroine's mother's godson, meaning her adopted son. The heroine and male lead are not related by blood and are not listed in the same household register.

The story begins when the heroine is twenty. She graduated from high school two years ago and is working while preparing for university entrance exams. There is no underage romance.

The male lead is twenty-seven, but for certain reasons he has no romantic history at all. He is pure in body and mind.

Theme: Everyone has their own gifts to offer