Demon Slayer: a Child Raised by Someone Else Becomes a Ghost King

[Demon Slayer fan + the boss behind the scenes + the desire to save + no CP] Hua Shi wandered around the world as the last descendant of the flower demon. He once rescued a sickly boy who could not live to be twenty years old, and transformed the dying boy into the world's first "ghost". However, Hua Shi sighed deeply as he witnessed the strong boy back then step by step turning into an angry, greedy and cruel ghost king who was afraid of death. Hundreds of years later. The self-proclaimed king of ghosts and arrogant Wu Ke, yet he swallowed his anger time and time again in front of Hua Shi—— "Huh? You said that so many ghosts were transformed by you, and you are the king of ghosts?" Wumei (suppressing his anger): Didn't you say that I will transform into ghosts from now on? ! Looking at Enichi Jiguo when he was a child, Hanayo said thoughtfully: "Hmm... You look very similar to someone I knew when he was a child." Wuhan (gritting his teeth): Well, so this is why you encouraged him to kill me? ! Facing Zhu Shi who wanted to get rid of control, Hua Shi said in a warm voice: "Ju Shi can do whatever he wants, you don't have to ask me." Wu Mei (angrily): Zhu Shi, you are more disgusting than your mother! ​… [The ceiling of the female protagonist's combat power + she will never be whitewashed or miserable]