
I saw your thing on summer's curse, and I just had to recommend this manga. Its hetero unfortunately, but I really love it. The cat stuff comes in a bit later, but it is really nice. (In my opinion)
http://www.mangago.zone/read-manga/the_white_cat_that_swore_vengeance_was_just_lazing_on_the_dragon_king_s_lap/

Haven't started reading yet but the concept is like HS except the mpreg.
Okay, after I started reading, the plotlines are not the same.