This list, but ignore Sadistic Beauty, No Holes Barred, and Tsumi no Kai. (As those can be rather twisted) http://www.mangago.zone/home/mangalist/460281/
The Sensual M, Hardcore Vanilla, Just Give it to me, The Virgin Witch.
My Androgynous Boyfriend kinda, How I came to like my male friend, Villainess in Love, The Red Empress, The Blood of Madame Giselle, Summer Solstice Point.
Now, bear in mind that the second line fits into it, as in, it has dominant/powerful fls and passive/submissive/puppy-like mls with plenty of romance, but not conscientioustly into the mold of bdsm. The first is straight up what u asked :D
A manga/manwhua where there's a top dom powerful woman, with a sub man and it's not a so twisted story and also that could be kinda romantic....