Sleepy Princess in the Demon Castle(2020)

In ancient times, when humans and demons had an unhealthy coexistence, a kingdom of demons took the human princess hostage and imprisoned her in her castle. Bereft, the followers of the princess were beating their chests in sorrow of her absence... until a hero rises and saves the princess! But what can a captive princess do until this warrior appears in his shining armor? Bear guards with bat wings are cute, but well, this captivity is boring! It was like this that he decided to spend the long hours of captivity in sleep, if he could find some peace, or from insomnia...