Catwoman might also be a main character. Even though she has her own motives, in this fanfic she could be involved with the bat family in some way, either as an ally or a more complex relationship. Her skills in thievery and acrobatics would add an interesting dynamic to the story.
One interesting story could be about the unique powers of the bat family members in the fanfic. For example, they might have special abilities to communicate with animals that are specific to their assassin skills.
I strongly recommend the novel " All-rounded Assassin " to you. The story is about a useless young master who was despised by others. He transmigrated and became an assassin. He had a full-time system and brought the system to explore the other world to pick up girls. This novel meets the plot requirements of an assassin transmigrating to a cultivation family. I believe you will definitely like it. I hope you like my recommendation.😗
"The Hitman's Chronicles" was a modern romance novel about a wealthy family. The soul of an ancient female assassin traveled through the 21st century. She knew martial arts and had the help of a CEO. She returned to ancient times and was adopted by her parents who were as rich as a country. She became the young lady of an assassin family and had a head of white hair. It became one of the cutest assassin novels in history. I'll recommend it to you. I hope you like my recommendation. Muah ~
😋I recommend you a novel, Reborn on Campus: Business Girls Are Not to Be Trifled With. The female protagonist, Lone Blood, was the number one assassin in the underworld. After her rebirth, she returned to school to fight against scumbags, dump scumbags, earn money, and flirt with beautiful men. She accidentally went home with a handsome man, only to find that this handsome man was actually a cold Major General who was called the God of War in the empire! Other than love, the novel also had special abilities and inspirational fighting elements. I hope you like my recommendation.😗
I recommend the book "Invincible Killer Pretty President" to you. The female protagonist is an assassin, and the male protagonist is a CEO with a big family. The two of them got married under a piece of paper and started a story of ups and downs. I hope you like this fairy's recommendation. Muah ~😗