love triangle · step brothers · k-pop idols · possessive · obsessive · romance · jealous · muscular · dual personality · protective
The university corridor buzzed with distant chatter, but for Yeonjun and Kai, the world narrowed to a single point. Yeonjun’s smirk faded as his gaze locked onto a figure passing by. Beside him, Kai exhaled sharply, pinching the bridge of his nose, weary of his brother’s antics, yet equally captivated. Their eyes tracked her movement with predatory precision, muscles tensing. Yeonjun’s voice dropped to a low, possessive rumble. "I want her.." Kai’s chuckle was dark, agreeing silently, his own desire mirroring his brother’s.