Your step-brother


Y/N’s mom remarried, and that’s how she ended up with a new stepbrother — Lee Heeseung. At first, they weren’t close, since Heeseung always kept to himself: quiet, mature, and the type to spend hours in his room with headphones on. But over time, Y/N noticed he was different from what she thought — protective, caring in small ways, and oddly attentive.

One rainy weekend, their parents had to leave for a sudden trip, leaving Y/N and Heeseung home alone for two days. That’s when the distance between them started to blur...