Saya is the secondary main character and central antagonist of Saya no Uta. She is voiced by Naoko Takano (credited as Midori Kawamura).



Saya was brought into this world via the experiments of Dr. Masahiko Ogai, a Japanese doctor working for the Tokyo University Hospital system. The method Dr. Ogai used to bring the creature that would come to be known as Saya is unclear and shrouded in mystery. It is more hinted that Saya was brought into this dimension by occult means rather than science due to the interaction with the character Ryoko Tanbo who had been hunting Dr. Ogai for some time. Although, the lines between the occult and science are blurred at times when Ryoko Tanbo starts reading Dr. Ogai's journal. Saya initially lived with Ogai as he did many experiments on her to determine what exactly he brought into this world. The creature showed signs of intelligence beyond human understanding as she was able to break many mathematical algorithms that no human or even computer had been able to break. Oddly though, the creature swiftly got bored and moved onto to other things. Dr. Ogai was quite surprised to find that the creature had an overwhelming passion for human literature and after reading through many novels the creature first started showing or developing signs of being feminine. Shortly after the creature started this trend, Dr. Ogai started referring to the creature as his daughter and the creature refereed to him as its father. Ogai then gave the creature a name, 'Saya', which was the name of one of his childhood pets which he oddly felt suiting the entity.

Like a father, Dr. Ogai began care for Saya deeply and in his journal he mysteriously wished in anguish that if only someone could find his daughter beautiful and give her affection as Saya began wanting deeply love and acceptance. Her avid reading habits had made her develop human-like emotions and almost like a child first understanding love she wished for it. Afterward, Ogai and Saya moved to his personal home in a Japanese suburb until Dr. Ogai mysteriously disappeared after going to work, leaving Saya alone. She survived on her own for a while until she decided to go out and find what happened to her father who worked at a local hospital.

Fated Encounter with FuminoriEdit

Saya got in the hospital and lived within it for a time, feeding mostly on cats, other animals, and supposedly a human infant. She spent her time searching for information on her father and getting amusement scaring patients at night with her grotesque image. It was during one of these scares that Saya met Fuminori Sakisaka. Fuminori had survived a near fatal car accident and because of a new experimental operation that saved his life he saw and heard Saya as an ordinary human girl. The catch was that he saw everyone else as a horrific monsters and the whole world as hellish landscape of blood, gore, and monstrosities. Fuminori and Saya became very close and they began living together after Fuminori was discharged from the hospital. They sent most of their time trying to figure out Fuminori's odd mental condition which seemed to be an extreme and exaggerated form of Agnosia and having an unnerving amount of sex.

Saya cooked many dishes to see if Fuminori could stand to eat since his mental condition twisted his sense of taste as well. Later, through an odd series of events he discovered raw human flesh and organs tasted great to him, although at first he had no idea what he was eating as he found that Saya ate the same thing. Saya and Fuminori went onto kill and eat several people including their neighbors and one of Fuminori's friends, a woman named Omi Takahata. Saya even went as far to transform Yoh Tsukuba, another of Fuminori's friends, into one of her species. Tragically, it seemed Yoh's mind shattered from the extremely painful transformation. The reason for this action seemed to be threefold: sexual enjoyment for Furminori, Saya's own jealousy of Yoh because oh Yoh's crush on Fuminori, and was likely also a mere experiment she wanted to conduct to test her abilities.

Saya later tested her abilities on Fuminori's neighbor, Yosuke Suzumi, in an attempted to understand and fix Fuminori's mental condition. She ended up giving him the same mental condition as Fuminori and this resulted in shattering his sanity. Saya did not expect this result and Fuminori walked in on Yosuke raping Saya. Fuminori killed him in a fit of rage with a knife and consoled Saya. Saya afterward offered to change Fuminori back to normal as she had figured out what was wrong with him.

Back to Normal Ending Edit

If this option is chosen, Saya will kiss Fuminori for the last time and her tongue will slide up into his head, and he will pass out.

When he woke up, his mental condition has disappeared and Saya has left. Fuminori realized he was living as a cannibal, turned himself in, and was promptly thrown into a mental hospital. Saya visited him after some time of him being in the hospital on the other side of his cell door where he could not see her. She used a cell phone to message him in text to say goodbye for the last time. This was where Fuminori told her for the first time that he loved her. Saya was certainly heart broken and said she planned on moving on to another world.

If the player chose for Fuminori to stay with his mental condition, the story will continue to the next set of choices.

Koji Tonoh's ChoiceEdit

Depending on the choice the player made for Koji Tonoh after he discovered the body parts of Omi Takahata in Fuminori's refrigerator, he can make a phone call to two people: Fuminori or Ryoko Tanbo. This choice dictates which two endings the player will get.

Humanity Wins Ending Edit

If Koji called Ryoko, the two cornered Saya and Fuminori at the abandoned house they were staying at and holding the abomination that was once Yoh as a slave. Yoh was killed in the battle and Ryoko poured liquid nitrogen onto Saya. She hit Saya, which made a large portion of her body break off. Fuminori then shot Ryoko in the face at point blank and killed her. Fuminori thought Saya was dead and committed suicide by continually bashing his face into his own ax. Saya however was not dead and had a tragic scene of crying out to him and tried in vain to crawl in her damaged form to him, but then was killed by Koji whom wailed on Saya with a metal pipe many times more than was needed. Koji was the sole survivor of the ordeal and lived the rest of his life as a paranoid schizophrenic. He continually saw hallucinations of Ryoko and Fuminori with the massive wounds they sustained at death. Being still sane enough to understand he was permanently psychologically damaged from what he witnessed, he spent the rest of his life with a revolver with one bullet hidden in his bathroom, in case he ever reached the point he can no longer stand to live with this fractured mind and kill himself.

Saya Wins Ending Edit

If Koji called Fuminori, he threatened him with the information he found out, including his cannibalism, Fuminori trying to kill him, and his somewhat limited knowledge of what Saya was. This led down the storyline to Koji foolishly going alone to the abandoned house Saya, Fuminori, and Yoh were staying at. Yoh jumped him, crying out in a twisted voice asking Koji to kill her. He does so, but did not realize it was Yoh. He then was confronted by Fuminori, where they fought and Koji got a well placed hit to Fuminori's ribs and broke a few. Saya then dropped from the ceiling and tackled Koji, broke his neck, and devoured him. Afterward, Saya started showing signs of being in pain which got Fuminori frightened. Fuminori consoled Saya but then at her behest they both went outside. She then bloomed like a giant beautiful and glowing flower to Fuminori's eyes where she was hinted to have died in birthing her spores to infect the world and begin the process of changing all living creatures on Earth into her species. Whether or not Saya died in this process is uncertain, as well as Fuminori's fate. It is entirely possible that he is transformed as well.

In the epilogue, Ryoko Tanbo had finished deciphering Dr. Ogai's journal and had already started to be transformed into one of Saya's species as the entire world falls into chaos. She even went as far to cut off one of her arms to slow the transformation, but began to accept her fate as her mind was being manipulated by Saya's spores.


From Dr. Masahiko Ogai's observations in his journal, Saya's species mold their minds subconsciously to be as similar mentally to the dominant species of a given planet to be able to envelop them more efficiently. She came into this world only with the motivation to reproduce and turn all life on Earth into her species, everything else was produced later. However, the trait of her mind molding subconsciously by the inhabitants of a planet seems to work against her. Human emotion and logic goes against the goals of Saya's species and can impede her. In the Back to Normal ending of the game, Saya outright abandons her goal to convert Earth into her species out of heartbreak since she can no longer be with Fuminori as he would see her as a monster after she fixed his mind. Additionally, Saya lured Yoh Tsukuba to Fuminori's house to change mostly out of jealousy as well.

When she arrived on Earth she did not exhibit many defining personality traits or quirks unlike how the player sees her throughout the visual novel. She developed her distinct personality after being engrossed in human literature for many years. She has a kind heart toward Fuminori and behaves like she has the mentality of a super intelligent child or teenager as she plays, toys, and experiments with earthling life.


Saya is very resilient if not practically invulnerable, being able to survive multiple gunshots and other blunt force trauma attacks. However, severe damage such as having a large part of her body destroyed can kill her, but this required liquid nitrogen to freeze that part of her body first.

Her resilience comes with what her true body is described as by Dr. Ogai's journal, as being a fleshly like sponge or fabric that flexes and expands in all directions which she can control to allow her to move quick and precisely. This allows her to expend enough force to break Koji's neck and rend people open with ease. Her body's trait also allow her cushion and absorb attacks that would cripple most any human.

Saya is capable of modifying the bodies and flesh of any species she has samples of genetic material from which she must ingest to absorb the information. This power can get down to modifying a creature's actual genetic code or perhaps her entire ability's catalyst is based on her power to manipulate the genetic code. If Saya desires, she can completely unweave a creature's body, cells, and genetic code and change it into something else. Large amounts are needed for her to fully understand complex organisms so it takes her some time for her to perfect these abilities. Though this did not prevent her from experimenting on victims to test how far her abilities had developed.

Saya's greatest power is the ability to 'bloom' and envelop an entire world with 'spores'. These spores begin changing all life of that planet into her species. They do this similarly to Saya's ability to change the bodies and genetic code of living beings but on a global scale. The spores would act like a virus and change the genetic code of creature to mold it into one of Saya's species. To get to this point, Saya must go through a long and lengthy process of ingesting large volumes of genetic material from eating and absorbing many various creatures from a given world. Saya's species is then pre-programmed to expel themselves and 'bloom' once their body has processed enough of that planet's various creatures. It is unclear whether or not this ability kills Saya after she completes this process as the visual novel leaves on a cliff hanger after she blooms.


Saya appears to all of Fuminori's senses as a rather innocent looking young girl. Although he quickly realizes this is not the case, he does not seem to care. Her hair is a dark blue or green and her eyes are a bright piercing emerald. She wears a light single piece white dress and sometimes wears sandals with her outfit.

Her real appearance is horrifying to normal humans. It is never seen directly and only a small portion of her is ever descibed. She seems to be a creature whose very appearance makes a normal human mind lose its sanity trying to comprehend what they are seeing. She is mostly seen as a mass of flesh and connecting tissue with large and small tentacles that spread out all around her. What the actual mass, size, and weight of Saya's true form is unclear. It is implied that her mass would be roughly equivalent to that of her appearance to Fuminori.