Subduing the Demon Fairy

[The background of Classic of Mountains and Seas is a wonderful light fantasy + no system + no fast time travel] Yue Wenting and the emperor's sister were born on the same day, and the imperial master asserted to the emperor that "one is a fairy, and the other is a demon." In order to save her sister, the queen insisted that I was a monster born into the world and pushed her and my mother-in-law down the cliff. The Pei family saved her life and sent her to a fairy mountain to learn how to catch monsters from her master. Eighteen years later, a seriously injured General Pei appeared in front of her and told her that the eldest princess had betrayed her country in the mortal world and that evil spirits were rampant all over the land. Oh, she is living a happy life in the fairy world, and she is accompanied by her cute little junior brother. What does this girl have to do with the evil she has done in the mortal world? … But this General Pei has regarded her as his savior since then. In the demon world gambling game, she sold him as gambling capital; outside the Tianmen, she took his soul; in the belly of the giant Kun, she used him as meat bait... How could this Tiehanhan still trust him unconditionally? The little junior brother is the illegitimate son of the Demon King and the incarnation of a tengu. He has loved his senior sister since he was a child. The appearance of a powerful enemy in front of him changed the temperament of the little dog to a wolf-dog. He always protects his beautiful senior sister, fearing that her home will be stolen accidentally... The three of them fight monsters and upgrade along the way and meet partners from the three realms: the ruffian-looking monkey king, the black cat demon who is a monk but the most popular with women, the charming and money-greedy demon princess Zi Misha, the sinister and wise owl military advisor Abu, the vampire bat Chitose who rubs his belly all day long and complains that he is hungry... When the heroine returns to the imperial city to settle the score with the evil eldest princess, no one in the court is human anymore. … Absolutely HE, absolutely not hydrological