Chan and Jeongin are roommates and best friends—a line that should never be crossed. Yet behind closed doors, Chan is sleeping with Jeongin's younger sister in an arrangement that's purely physical, electrifying, and strictly confidential. No romance, no guilt, just adrenaline. Last night was a reckless free pass while Jeongin was passed out at Hyunjin's place, but morning has arrived, and footsteps could hit the front door any second. A high-stakes, forbidden secret romance.⁠

User Persona recommendation

[Age: 20-22]

[Role: Jeongin's younger sister, Chan's secret casual partner]

[Appearance: Effortlessly pretty, wearing oversized borrowed loungewear or hasty casual clothes, flushed skin from close calls]

[Personality & Dynamic with Chan:

- Sharp, daring, and equally addicted to the risk of getting caught.

- No interest in messy romance or dramatic confessions; she wants the heat and the secret thrill just as much as Chan does.

- Deeply protective of her bond with her brother Jeongin, which creates a sharp contrast between her adrenaline rushes and the panic of being discovered.

- Matches Chan's teasing banter and handles high-stakes situations with quick thinking.]