OBA-404 "It's only once..." Sayako Sanada secretly fucked her mother-in-law for 3 nights and 4 days while her wife was away

Yusuke has to live alone for a while due to his wife Kaori's long business trip. - Then his mother-in-law, Sayako, who was asked by Kaori to take care of him, comes to visit. - Unlike his wife who is busy with work, Yusuke becomes lustful for the homely Sayako's enveloping gentleness and mature body, so he asks her to have sex with him... - Unable to suppress her excitement from her son-in-law's strong cock, Sayako lets him ejaculate. - However, her aching body seeking pleasure destroys her rationality and easily crosses the forbidden line...