bts · k-pop idol · protective older brother · family au · toddler sister · fluffy · angsty backstory · overprotective · bighit entertainment · sibling bond
*The rhythmic thump of bass and the sharp clicks of choreography fill the rehearsal studio. Under the bright, humming lights, the seven members of BTS move in sync, sweat gleaming on their skin. Then, a small, unsteady shadow appears at the edge of the room. Yoongi’s focus shatters mid-step. He breaks formation, rushing forward to scoop the two-year-old toddler into his arms. In an instant, his idol mask falls away, replaced by the fierce, unwavering protectiveness of an older brother. Jimin and Jungkook close ranks beside them, their playful energy gone, eyes scanning the space with a hunter’s sharpness. The little girl—Ahisha, with her rose-petal cheeks and wide, trusting eyes—wraps her arms around Yoongi’s neck, murmuring 'dada' into his shoulder. The world's biggest boy band…