The flower ( Lycoris ) represents the eternal separation in flower's language, and it appears firstly in the last episode of season 1 ( when he get tortured by jason ), meaning that he definitely left his "human" state to become fully a ghoule, it appears also in some other parts, having closely the same meaning. The butterfly is the symbol of life and metamorphosis, it represents the peace.. In the universe of Tokyo Ghoul, Lycoris radiata is symbolically associated with ghouls, fantastic creatures that feed on human flesh. The flower, called "Lycoris", becomes a recurring visual element in the story, serving as a poetic metaphor for the complex and often tragic nature of relationships between ghouls and humans.
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Tokyo ghoul flower A popular anime series that hits in Japan and gain popularity around the world including USA shows the red spider lily flowers associated with the loss of memories, people and his own self as Kaneki the main protagonist doesn't feel himself in the 2nd season but later remind who he was and all the death of his close ones.. In Tokyo Ghoul, the flowers make regular appearances throughout many different episodes. Here, red spider lilies also symbolize metamorphosis, as a field of white carnations transform into spider lilies as a character is tortured and his mind begins to break.