[Atori Akinao (Atori K)] Mayu to Onii-chan no Seieki

Mayu, a timid sister, is startled when her brother bursts into the room and forces himself upon her, igniting a forbidden encounter that blends shock with perverse pleasure. The heated scene unfolds as she reluctantly accepts his advances, culminating in a raw, unprotected climax that leaves her drenched in his semen. A mix of guilt and yearning lingers as she whispers a plea for him to stop, while the promise of repeated intimacy hangs in the air.