FERA-204 My mother was my sex practice partner. I broke up with my girlfriend because the sex with my mother was so good, so I was crazy about it and came inside her over and over again. Okae Rin

It seems that things aren't going well between Rin's son and his girlfriend. When Rin finds out that the reason is that he's bad at sex, she proposes that she become the instructor and provide him with intensive sex training. For the happiness of her beloved son, Rin uses her mature body and expert techniques to provide passionate instruction. However, Rin's dedicated training ends up driving her son's sexual desires crazy...