I'm looking for a certain series. It was about a mercenary and a Beast Girl who traveled together(Don't remember if she was cat-like or bunny-like). The girl's race has a rule that they only marry/mate with peole stronger then them. Relationship started out forced but became consensual. The girl's junior shows up and trys to steal away the girl but begrudgingly join his harem. Second girl is Futanari. Series ends with girls pregnant.