Mother-in-law, Ryo, who lives with her daughter and her husband. Her loneliness, which was living alone due to her husband's job posting, is no longer there, but only the pain in her body is helpless and her libido is increasing. At that time, she knew that her son-in-law, Taro, was a big cock. She took advantage of the fact that her daughter and her husband were sexless, and approached him saying, "Instead of my daughter..." and devoured her carnal desires. Ryo who invites her anywhere and enjoys decachi ○ po to her heart's content. Taro, who was swept away by the pleasure, became drowning in her mother-in-law's fascinating body and began to seek it himself.
