recently, mio and her husband are feeling the decline in physical strength. the night business was also light-hearted. mio began light exercise and stretching to gain strength. i see my son in the hallway while i’m stretching. mio called her son and did some stretching together. my son gets an erection when he sees his mother bouncing on a balance ball. mio noticed her son had an erection. that night, mio, who can’t get her son’s erection out of her head, masturbates in the kitchen. my son saw it…