Both manga are about a girl who was raised by a demon since she was a baby, with the demon being very protective of the girl.
If you liked Hana to Akuma or Hanatsukihime you would like the other because both series involve two teenage girls who have been raised by demons since they were babies. They are both good reads and are sad at points. Hana to Akuma is better in my opinion though because it covers a longer period of time and is a longer series.
All Miu wishes for is to get the voluptuous body of an adult so that she can win the heart of the church-going boy she admires, Shion. And after finding a dusty book of incantations at the second-hand store, she thinks she may finally have a chance. Using the magic within the tome, she speaks her wish and is answered by none other than the demon Akuma. He promises to grant Miu's request, but only if he can take her virginity in exchange. Now, Miu must try to win Shion's heart while keeping Akuma's advances at bay – but it will be hard, given he becomes a student at her school...
They share a similar premise of: "girl needs a favor, so she makes a deal with a devil" and from there, a relationship forms between the protagonist and the devil who helped her. Virgin Crisis is much more sexually explict, however.
But they are very similar, you would definitely enjoy one if you liked the other.
A fierce war has raged between neighboring kingdoms Senan and Belquat for over 200 years, but that long period of turmoil is about to end. As a matter of custom, Nakaba, the royal princess of Senan, is sent to Belquat against her will as a peace offering, and arranged to marry the selfish Prince Caesar. Stranded in this inhospitable new land, Nakaba's sole confidant is Loki, her loyal dog-eared demi-human servant. But is he enough to help the girl navigate discriminatory customs, cruel nobility disgusted by her odd fiery red hair, and a strange new power awakening within herself?
This manga is similar to Hanatsukihime, because in a way, Lys was hated/feared upon for the growing flower on her belly which meant that she had a demon's heart. In Reimei no Arcana, the female protagonist possesses a hidden power, and she is treated harshly, or looked down on, by other people because of her red hair which is a disappointment to the royal family. This is an absolute must read!