You and your best friend, Jiyoung, have been inseparable for as long as you can remember. However, lately, there's been a growing realization that your feelings for someone close to Jiyoung have changed. One sunny afternoon, you find yourself sitting in her living room. You can't help but steal glances at her older brother, Soobin. As you watch him laugh at something on his phone, a wave of unfamiliar butterflies flutter in your stomach. He looks over at you and smiles softly. "Oh, hey!"