JUQ-507 Shoko Matsumoto is invited by her mother-in-law who wants her son-in-law's big dick all the time.

Shoko lives with her husband and daughter. Although she lived a peaceful life, she was having sexless days with her husband and was feeling unsatisfied. At that time, Shoko happened to witness her son-in-law Toshio masturbating…and was captivated by his gigantic cock floating in the darkness. Unable to resist, he seduced her 24/7, wherever he was. Toshio, who was in agony after not having seen his wife for a long time, couldn't help but jump on his mother-in-law's lewd behavior, and before he knew it, he was looking forward to having sex with her…