Gaku quit his job and returned to his hometown. However, with no particular purpose, he spent his days aimlessly at a friend's house. There, he reunited with Yumi, the mother of his friend whom he had admired for years. Gaku, who had been secretly in love with Yumi since childhood, couldn't hold back his pent-up desires and thought, 'If I'm going to do it, I might as well make her mine...' He pushed her down. Her body, relentlessly thrust into by his sturdy cock, was made to cum countless times, forcing her to acknowledge that she was no longer just a mother but a woman. Gradually, her body transformed into that of an obedient female...
