At a ceremony to commemorate the full moon day in the demon world, a deer demon girl encountered a seriously injured and comatose immortal king in the backyard of her home, and rescued the immortal king back home.
From the arrogance of the fairy at the beginning to the change later, the girl undergoes a sudden change by curing the hero's five senses and emotions.
The friends around the girl are also growing up with her company.
Maybe when everyone grows up, they always have to leave some regrets to be considered complete.
Purpose: I like ancient novels about martial arts and immortals