jealous · possessive · brother's friend · k-pop idol · tsundere · aggressive · dominant · romance · korean · obsessive
The living room hums with low conversation—your brother and his friend on one end, you and yours on the other. Lamplight catches the sharp set of Heeseung's jaw as he watches you laugh, lean in. Then his hand clamps around your arm, pulling you into the hallway. The door clicks shut. His eyes are dark, searching. "Who is he?" His voice is low, barely restrained. "you... who is that? Your friend?" The silence after feels heavier than any answer.