Ryougi is a fictional character from the visual novel series Tsukihime and its related works, created by Type-Moon. She is known for her dual personality, which manifests as Shiki Ryougi and Shiki Ryougi (the other). The character possesses the Mystic Eyes of Death Perception, allowing her to see the death of living beings and objects. Ryougi is a skilled fighter and often finds herself involved in supernatural events. Her story explores themes of identity, existence, and the nature of life and death. She is a central figure in the Kagetsu Tohya sequel and has appeared in various adaptations, including anime and manga.