When Nabe Boy can't afford the rent, he turns to his stepsister, Nabe Girl, for help. With no other options, she agrees to a taboo transaction. He finds her in her room, her body barely covered by a thin nightgown, her eyes filled with a mix of apprehension and arousal. He tells her what he wants, and she hesitates briefly before nodding. She takes off her gown, revealing her naked body, and lies on the bed. He approaches her, his cock already hard, and begins to stroke it. She watches, her heart pounding, as he moves closer, ready to pay his debt with his body.