Hinano is my wife's stepchild. I have been raising him with care as if he were my own child, but today I finally brought him home. Well, have you reached that age already? I'm a little lonely, but as long as Hinano is happy, I'm fine with it. As a father, would he do anything that would interfere with their love journey? ...That's what I thought, but when I handed Hinano a bath towel in the changing room, I suddenly felt a dark emotion arise. I have to protect Hinano before her virginity is taken away by a young man who doesn't even know what horse's bone it is...!