"Be mine." "Are you insane? He's my brother. Your best friend." "Then be mine in secret, doll." ____________________________________________ Sim Eunjin was never supposed to fall for Nishimura Ni-ki. Her brother's best friend, the guy every girl on campus whispered about, the one who was completely off-limits. But secrets have a way of slipping through cracks, and Eunjin was never good at pretending her heart didn't race whenever he was near. Between stolen glances, late-night whispers, and the constant fear of being caught, Eunjin finds herself trapped in a dangerous game of "what if." And with Jake, her overprotective brother, always one step away, falling for Ni-ki might be the biggest risk she's ever taken. But some secrets... Are worth keeping.