Berserker (バーサーカー, Bāsākā?) is a Berserker-class Servant summoned by Karin "After" the Holy Grail War‎‎ in Fate/Requiem. She is also summoned by Ritsuka Fujimaru in the Grand Orders of Fate/Grand Order.



Berserker's True Name is Kijyo Koyo (鬼女紅葉?), also known as Momiji. Karin has given her the nickname "Momi".

The demoness from the legends. According to the legends, she was killed by Taira no Koremochi during the Heian period, on the mountain of Togakushi. She was also said to be the leader of a group of bandits who opposed the Imperial Court, or a lady who taught villagers how to read and write and healed their illnesses. Her story was presented extensively in the form of a noh, jōruri and kabuki performance, the "Momijigari".

Her name in her childhood was "Kureha" which was changed to "Kōyō" when she went to the capital. By nature she was a beauty overflowing with wisdom who drew the attention of many people; she was also skilled with the koto which earned her the notice of Minamoto no Tsunemoto's wife. She was favoured by Tsunemoto right away, but she received the capital punishment when she was suspected of putting a deadly curse on the shogun's wife. However, since she was already carrying Tsunemoto's child, instead, she was banished to the province of Shinano. Kōyō, who was welcomed by the villagers of Minase (later Kinasa), eventually became feared as the "kijyō (oni woman)" who led the bandits of the surrounding areas. The military commander Taira no Koremochi who was tasked with her subjugation met Kōyō in the mountains by chance, but it turned into a desperate battle. Koremochi, who prayed to the gods and Buddha, was gifted with a spirit sword capable of conquering demons and, dressed as a traveling priest, challenged Kōyō by himself and finally defeated her.

Kōyō, who was said to be a gift from the Demon King of the Sixth Heaven in response to the prayers of a couple who weren't blessed with a child, possessed the qualities of witchcraft from a young age. Mount Togakushi, located in the province of Shinano where she was banished to, was a mountain of asceticism where ascetics founded a temple after they received a vision from Kuzuryūshin. In addition, Mount Iizuna, which was adjacent to Mount Togakushi, was a land of witchcraft and the supernatural that was popular with the worshippers of the tengu. With this place as the backdrop, Kōyō made another kijyō, "oni lady", her follower who was a remnant of the Imperial Court hating Taira no Masakado's group and was known for her superhuman leg strength.[1]


Berserker cannot speak, and communicates with her Master Karin through telepathy. Even then Karin does not actually hear Berserker's thoughts as words, but rather as feelings. Erice Utsumi has an app which tries to analyze Berserker's body movements and put it into words, though it is not very precise.

In her humanoid forms in Fate/Grand Order she is capable of speech, but is still mute in her dinosaur form.

Berserker's dinosaur form was inspired by a great skeleton of a dragon god of the mountains which impressed her; perhaps in truth it was a dinosaur fossil.[2]


Berserker is a sweet and gentle Servant despite being a Berserker. She often watches out for Voyager.



Koyo has watched over Karin since she was born, but did not manifest physically until Karin was 9 years old because Karin's parents hate Servants and do not allow them to be summoned in their home. Koyo first manifested when Karin was kidnapped by Louis XVII. They communicated via telepathy before then.


Contrary to her class, Koyo is a gentle Servant well versed in healing magecraft. Berserker's Noble Phantasm is Momijigari.

Shapeshift (Dinosaur): C From a court lady of high standing, she transforms into the form of a terrifying kijyō. Furthermore, because she desired the Madness Enhancement, she came to possess the massive body of a dragon.

Kuzuryū's Flash of Lightning: A: A prayer and kagura revering Kuzuryūshin who is a fierce oni and also a water god. It appeases and controls the fury of all things in heaven.

Lifeline: B: An incantation of Iizuna Gongen's protection that drives away sickness and brings about a long life.[1]


Berserker is mentioned in Plus Period in relation to the Tohno ancestry of oni. Although she is not Akiha Tohno's ancestor, her legend could be considered as "Akiha's origin."[3]


  1. 1.0 1.1 Fate/Grand Order Kijyu Koyo's profile - Translated by Konchew
  2. Fate/Grand Order Kijyo Koyo voice lines - Translated by Konchew
Community content is available under CC-BY-SA unless otherwise noted.