to support my pregnant wife, my mother-in-law marina shiraishi came to tokyo from her home. because of this, our family relationship was good... or so i thought. i was ordered not to masturbate for a while because it was unacceptable to feel pleasure alone. a few days later, while i was hiding in the bathroom masturbating, marina suddenly opened the door. i was shaken by the sudden situation, but marina, knowing the circumstances, apologetically offered to help me...