AZAMUKARE SEIJO TO SHUGORYUU NO KONYAKU

Azamukare Seijo to Shugoryuu no Konyaku summary:

For some reason, Philia, who grew up in an orphanage, was able to use the "healing power" of a royal daughter. She was bought for her ability to act as Princess Lovetta's "healing power" behind the scenes. However, Philia's life was in danger due to Lovetta's scheme, who was driven by her jealousy. Just when she had prepared for her death, a dragon prince appeared...

For some reason, Philia, who grew up in an orphanage, was able to use the healing power of a royal daughter. She was bought for her ability to act as Princess Lovetta's healing power behind the scenes. However, Philia's life was in danger due to Love