Mother's best friend

"It's a short while, but please take care of me," asked by her parents to leave the house on a trip, and her mother's best friend, Anna, takes care of her. During adolescence, Koichi was captivated by his huge, heavy breasts that were so stimulating that he was so strong. If I missed this opportunity, I might never meet such a wonderful woman again. Even though she's still there, Koichi is moved by her worldly desires and uses Anna's underwear as material for masturbation. However, unfortunately, she runs into Anna...