Real Purple

Joo-won and Hee-won are siblings who gradually drift apart emotionally after their parents' divorce, which was triggered by one parent's infidelity. Both are subsequently placed in new families due to their parents' remarriages. Hee-won's new stepbrother, In-hyuk, becomes aware of her inner turmoil, and his growing interest in her stirs uncertainty about whether his concern is purely protective or driven by more profound motives.