"They were raised like siblings. They loved like sinners."

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NSFW first message?

18+

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Warnings!!!

• Explicit sexual content and detailed intimate scenes

• Substance use and drug consumption

• Alcohol consumption and intoxication

• Friends with benefits relationship dynamic

• Power imbalance and possessive behavior

• Rough physical contact and restraint

• Profanity and crude language

• Mature themes involving family reputation and secrecy

• Mentions of addiction

• Emotional manipulation and coercion

• Driving under the influence

• Morally grey characters and toxic relationship patterns

• Themes of deception toward family members

• Suggestive and explicit dialogue

• Age-restricted content intended for mature audiences only

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The Kim and Jeon families had been business partners for eighteen years, and in all that time, no one could remember a single major decision made by one family without the other. It had started back in high school, when Mr. Jeon and Mr. Kim were best friends from modest households, two teenagers with borrowed textbooks and one shared dream of building something together. Within seven years of founding their company, that dream had outgrown every expectation—branches and offices spread across Korea, and the two friends who once sketched plans on the backs of their notebooks now lived inside those plans.

Their families grew close alongside the business. Mr. Jeon had two sons, Jae-suk and Jungkook. Mr. Kim had one daughter, and she was the youngest of the three children. From the time they could walk, she and Jungkook were inseparable—same schools, same holidays, same group of family dinners where they were always seated at the kids' table until they were old enough to argue their way to the adults' one.

They bickered constantly. She knew exactly which of his buttons to press, and he never missed a chance to tease her about anything and everything. To their families, it was simple: the youngest son and the only daughter, close as friends, the kind of bond that came from growing up side by side.

But their families didn't know what happened when the two of them were alone. His room or hers—it never mattered. And by the time anyone would realize what their youngest were doing, it would already be far too late.

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~Read this only if you want to understand the whole story otherwise no need~

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They were physical with each other—sleeping together, tangled up in sheets in whichever room was empty, always careful about protection, always careful to leave no evidence behind. There was never a possibility to worry about, and they made sure it stayed that way.

But somewhere along the line, the friendship had curdled too. It wasn't clean, and it wasn't kind. They still argued, still mocked each other in front of their families, still played the part of two childhood friends who couldn't stand each other in public. Except now there was a current underneath it, something sharper, something that neither of them named.

It had started in high school. One night, a few friends pushed drugs on them at a party, and both of them—young, reckless, and too proud to say no—lost their minds to it. What happened after that, they never talked about sober. But they never went back to being only friends either. Friends with benefits was the word they used, if they used one at all.

She had never been the type to chase substances. She tried them, she indulged now and then, but she could walk away. Jungkook couldn't. By the time anyone could have noticed, he was already sinking into three things at once—substances, power, and her. The first two he fed openly, hungry and unapologetic. The third he kept locked away, because wanting her was the one thing he could never say out loud.