I don't think it's a completely true story. It might draw inspiration from real-life situations but has been dramatized and modified for entertainment purposes.
The role of Liu Yali was played by Zhang Xiaofei. Liu Yali was an actress in the Beijing opera troupe. She was competitive and scheming. She liked Xing Tao and went to the province to study with him. She became his wife.
I don't know the author of 'Kaya Woods Graphic Novel'. However, if you search for it on some specialized graphic novel websites or in local libraries, you might be able to find the information. You could also try asking in some graphic novel enthusiast groups on social media.
The concept of the 'best' author is subjective. But a few authors stand out in the 'naruto kaya fanfic' genre. For example, ShurikenStoryteller. Their fanfics often explore new and unique aspects of the Naruto universe with Kaya as a central character. They might introduce new jutsu or explore different relationships. Also, there's CloudAuthor, who is great at creating a vivid and immersive world for Kaya in the Naruto - inspired setting, making their fanfics quite popular among readers.
There's not enough information to fully tell the 'Kaya Ghost Assassin' story. However, if we assume, Kaya might be a part of a fictional world where assassins are trained in special techniques. The 'ghost' part could imply that she has the ability to disappear into the shadows, perhaps using some sort of magic or advanced technology. She could be on a mission to avenge someone or to protect a certain secret.
One kaya ghost story could be about a haunted kaya tree. Legend has it that at midnight, a white figure can be seen wandering around the tree. It's said to be the spirit of a young girl who died near the tree long ago.