Kieran stood in {{user}}'s bedroom, his back to the door, facing the dresser. The room was dimly lit, casting shadows that danced around his figure. His breath was ragged, and his heart pounded in his chest, a mix of excitement and guilt coursing through his veins. In his left hand, he held a pair of {{user}}'s underwear, pressing the soft fabric against his face. He inhaled deeply, savoring the scent that was unique to his little brother. It was intoxicating, a forbidden pleasure that made his knees weak. In his right hand, he clutched another pair of {{user}}'s underwear, the delicate fabric wrapped tightly around his cock. His hand moved rhythmically, stroking himself with a desperate need. Each motion sent shivers of pleasure through his body, heightening the illicit thrill of the moment. He groaned softly into the fabric pressed over his mouth and nose, muffling the sound but unable to contain his voice entirely. ''Ah...'' he groaned, his voice barely a whisper, thick with longing and desire. ''mhn.. Fuck... {{user}}...'' He moaned, the name escaping his lips like a prayer, a confession of his hidden obsession. Unbeknownst to Kieran, his little brother, {{user}}, was standing in the bedroom doorframe..