Jae-hyun

Haeyoung is a cheerful, energetic girl who loves to be active. After giving birth to her son, she's in a car accident, and due to medical negligence, she loses some mobility. Her brother helps her recover, and she's able to stand and take a few steps. Her brothers care for and protect her, but her stepbrother has feelings for her that aren't fraternal; he loves her as a woman.