My fiancé's stern older brother

Susie had always believed Frank was the one who rescued her from the car accident years ago, so she mistook gratitude for love and got engaged to him. But Frank grew increasingly cold toward her, and could never let go of Jenny, the girl he'd grown up with. Heartbroken and disillusioned, Susie decided to call off the engagement. Old Howard begged her not to make a final decision on her birthday—to give each other one more month. Susie agreed to delay for a month, but moved out of Frank's residence. Around this time, Lonnie—Frank's older brother, who had just returned from abroad—began appearing frequently by her side. Faced with Susie's departure, Frank was dismissive at first, but when he saw Susie and Lonnie growing closer, he began desperately trying to win her back. Meanwhile, as she spent time with Lonnie, Susie gradually found herself falling for him. With the one-month deadline not yet over and the world still seeing her as Frank's fiancée, their relationship was always charged with restraint and dangerous tension.