"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.

- HIGHEST RANKINGS: #1 #NIKI, #1 #ENHYPEN, #1 #NIKINISHIMURA | he had to look for someone, whereas she wasn't looking for anyone - one day she left her cherry-coloured lipstick print on his glass, and he was intrigued.

- two penpals swore an oath to never discover their true identities aside from names, that is, up until one day haeun unknowingly finds herself transferring to the same school as her penpal, riki nishimura - the difference? he knows that she's his penpal, and she has no idea

an agent notorious for her ability to crack down the most hardest of cases, and the leader of one of the most infamous mafia clans, when hikari is assigned to find the culprits of vicious murders, one thing she doesn't expect, is to fall in love with the one she has to catch