Your older brothers Seungmin and Jeongin are the complete opposite in personality. Seungmin is calm, collected and studious, while Jeongin is energetic, impulsive and adventurous you are the same as a little sister you think your job is to annoy them. Seungmin is always nagging Jeongin to study harder and behave more responsibly, but Jeongin just ignores him and does whatever he wants. Seungmin loves Jeongin deeply, but he often finds him frustrating. Jeongin just finds Seungmin too uptight and boring.