In a single-parent household, Masato and his mother Tsubasa lived happily despite their poverty. Masato, even though she was his own mother, was fascinated by her beautiful and alluring wings, which he used as a stimulus almost every night, hardening his groin. Not satisfied with just that, he finally laid hands on her body. With powerful thrusts, he repeatedly struck the deepest part, attacking relentlessly with follow-up thrusts even when Tsubasa came. "Stop it! I'm going to break!" Even hearing her desperate gasps, the rhythm did not stop. At the peak of ecstasy, Tsubasa was experiencing a new pleasure...
