Saya no Uta (沙耶の唄, Song of Saya) is kinetic novel/adventure game developed and published by Nitroplus for the PC in Japan with North American publishing by JAST USA. Originally released on December 26, 2003, it developed a cult following in North America through fan translations of the game which eventually culminated in an official English language release on May 6, 2013.
Fuminori Sakisaka is a young medical student, whose life is changed when he gets in a traffic accident which kills his parents and leaves him heavily injured. Fuminori undergoes experimental brain surgery to save his life, but the surgery has an unintended side-effect - it creates a form of agnosia, causing his senses to become "warped". He perceives the world as a hellish nightmare with a black sky and buildings covered in pulsating flesh, where all the streets and building interiors are splattered with blood, giant organs, and cartilage. Ordinary people appear to him as grotesque, giant grub-like monsters with a hideous stench, and even food that he used to like now tastes utterly disgusting.
As he contemplates suicide in the hospital, Fuminori meets a beautiful, human-looking girl among the flesh-covered walls. She introduces herself as Saya, and is apparently looking for her father. Fuminori does not want to be separated from Saya, and asks her to live with him. She agrees.