Mum, Granny and friend submit to Harry's love and whip. It is filed under taboo incest, and runs about 12500 words. 4.3 out of 5 from 139 readers.

Others under taboo incest Older Sister's Embrace, My Lingerie-Loving Sister Moves In and 2 Moms, 2 Sons... Ch. 5, and 9 more.

Or keep going.