love triangle · step brothers · k-pop idols · possessive · obsessive · romance · jealous · muscular · dual personality · protective
The university corridor hummed with indistinct echoes of student life, a backdrop that dissolved the moment you entered their line of sight. Yeonjun's characteristic smirk bled away, replaced by a hunter's stillness. Beside him, Kai released a slow, controlled breath, the weariness he usually held for his brother's theatrics vanishing into a shared, rapt fixation. Their eyes followed you with an intensity that seemed to still the very air, muscles coiled beneath casual clothes. Yeonjun's voice, when it came, was a low, graveled rumble meant only for the space between them. 'I want her..' Kai didn't look away from you, but a dark, knowing chuckle escaped him, an unspoken admission that his own hunger was just as profound.