Himekishi Lilia

in both u can see princesses and queens being boned by human as well as monsters don't worry(no tentacles) i liked the concept of Kuroinu i wish there was a place where men can bone any women they want Animation quality of Kuroinu is great too 

Very similar stuff, breaking down a Princess with various huge monsters and tentacles. Very extreme fetishes from inflation to large insertions, etc. If you're a fan of hardcore medieval hentai don't miss these. 

Same style of artwork, same concept.  

In both stories some kind of strong-willed woman is taken be force by both humanoid and non-humanoid creatures. As you could guess, both are hentai and extreme one on top of that. 

Incestuous, mommy issues-filled older brother prince betrays his own sister -who is the favorite of the family and has warrior tendencies- while destroying his own, aforementioned family, working in tandem with a mysterious female accomplice. Some penetration involved, as well. 

The art-style and animation are mostly the same. 

Similar dark themed story revolving around contracts with demons, black magic, usurping thrones, and princess sex slaves. Both are very graphic and involve rape, gang bangs, tentacle sex, and women getting ravaged until they loose their sanity.  

Both are hentais containing one or more girls being trained into becoming slaves by a royal family. Both contain monster rape, humiliation, and magic, though Himekishi Lilia revolves around magic more and uses it to a further extent when it comes to the sexual scenes. They both have a similar feel to them although the set ups for either anime are very different; Himekishi Lilia takes place at a castle in a middle-aged styled world while Uchuu Kaizoku Sara mostly takes place in a spaceship and appears to be set in the future. 

Both Himekishi Lilia and Sexy Magical Girl Ai share a lot of similar elements. For one, if you're a fan of the intense and extreme tentacle rape action in either of the two, you're going to like aspects of the other. Both contain tentacles that have instances of poking/stretching visible on the girls outsides. Certainly not for everyone, but for those who enjoy their extreme hentai they'll get a kick out of this as it's not too common to see in hentai, yet. On top of this the same animators who worked on Ai worked with Lilia, so you expect similar designs and styles. Overall, Ai has more of a "nice" ending with more elements of action and magic, while Lilia is more of a big sexual adventure for those with various fetishes not found in a lot of hentai, inflation, huge penetrations (giant monster), petite catgirl, and other various things. Those who like their extreme hentai will probably enjoy both. read more 

Both in a similar fantasy setting. Both have strong beautiful heroine that gets broken down physically and mentally through various heinous acts of rape, bondage, gang bang, public humiliation, and other brutal sex acts until she loses it and becomes a sex addicting slave.  

Just as fetishfull and demonical hentai, filled with awesome plot ^^ 

both royalty and abused