by Zedda
I feel like you should have written this in third person, or switched narrators if you wanted to stick with 1sr person. The mc narrating from his step-sisters POV is confusing, at times.
Did you mean 6 inch long toy, as in a toy that is 6 inches in length? Long, 6 inch toy describes a toy that it's long, and 6 inches in some dimension other than length.
Ew, you should not have made her such a slut. Should have made her a virgin just acting sluty that the mc would dominate