[Saitou Renji] Sex Education Mama [innyinny]

When Saori catches her young son Ken with an impressive hard-on, the doting mama decides he's finally old enough for a very hands-on lesson, delightedly praising how hard he got for her as she frees her enormous breasts. Stripping completely bare, she beckons him closer to teach him all about sex, only for the eager boy to bury his face in her sweaty, hairy armpits and lap up her sweet-and-sour scent while she squirms between embarrassment and arousal. Maternal instruction quickly melts into surrender as her small son has his way with every lush inch of her mature body.