Mahi, who lives with her daughter and son-in-law, one day accidentally sees her son-in-law Keniichi's incredibly huge dick. Since then, she can't stop thinking about his massive cock and spends her days in frustration. One day, she catches him masturbating. It seems he is sexless with her daughter, so feeling sorry for him, Mahi thinks, 'Then I'll take my daughter's place...' and skillfully seduces Keniichi, then eagerly sucks on his proudly erect massive cock…
