What is "black flower"

Black Flower ( simplified Chinese is Taiwanese novel by Yu Wo and illustrated by Monto C3. It was published in 2009. It has writing in a different style from another series of Yu Wo. It’s rather heavy and has many cruxes. This novel is a dark fantasy. It has wrath, love, hate, affiliation and revenge. Written in the first person, the story takes place in a fantasy world with many races. The novel details the story of the flower, black flower that have shapes like human. It was born from the tree of souls, near the death tree. So, the black flower has to depart and it’s the start of this story.