[ura_macoto] Family Bonds (Kinky Family Sister Punishment Sex Toy Training)

Yuna and Yuki learn that teasing their brother Yusuke comes with a strictly enforced punishment when a simple squabble leaves the two busty sisters hogtied in tight, glossy latex with buzzing toys pressed deep against their bodies. Muffled by tight ball gags and blinded behind masks, they squirm and whimper through layers of rope, collar and humiliating restraint while every muffled plea for relief only earns tighter control and more relentless vibration. What begins as sibling discipline spirals into a helpless, blushing contest of endurance and submission where begging, blushing and thanking him becomes their only way out.