Yuko Hyodo/History

Chapter 1
Yuko is the youngest daughter of the Hyodo family and Eikichi's twin. When she sees her brother smoking after his failed attempt, she tells him that she knows she choked on his friend's cigarette and bought one to get his mother's attention. She offers him an onion as compensation, saying that they are good for circulation and exorcism. Her brother asks about the onions that she has stored, and Yuko tells him that they are special amulets to protect Eikichi's ordinary life. This last bothers her brother a lot because he feels incompetent in his ordinary life and feels that he is always in the same thing, wishing that his life was no longer ordinary. Yuko comforts him by handing over a raw onion to eat.

During the night, she assists with her group to hunt for Sagakos, but is visibly weak due to their constant increase recently. The Busters attack and immobilize tonight's Sagako for Yuko to purify. But before performing the purification ritual, Sagako trips her and Yuko sacrifices herself to seal it. With her power reduced by her constant battles, she seals herself and preserves herself in the onion so as not to die. Before turning into an onion, she manages to tell the Busters that she has a twin brother named Eikichi.

In Eikichi's flashbacks, Yuko always got hurt from her constants fighting and always excused herself by saying that she was clumsy and fell down. He told all this to her brother to protect him from the shadows.

Chapter 4
According to Jofuku, Yuko worked with Tae at the Karatsu Burger food stall when the place was about to close due to poor sales. When Yuko arrived, the place began to prosper quickly and attract customers, which made the place famous in the area. After it turned into an onion, the place began to decay again until it became stagnant. But Tae is still willing to treasure the place where Yuko worked so hard.

Chapter 9
Sometime in the past, Yuko asks Tae if she believes that Sagakos were born to do evil because according to her, Sagakos take the form they do for a reason. The Sagakos appear and take the form of things antagonizing the prosperity of Saga, but if the Busters eliminate them, they will never be able to know the reasons for these curses. Perhaps, if she treats the onions with love, her feelings will pass to them, and it will be possible to communicate with Sagako.

Chapter 11
Her older brother, Eikichi, feels useless and can be replaced on his baseball team. Yuko tells him not to be clouded by negative thoughts about him and to recognize that he himself is unique.

Flashback
Yuko is released from her onion after the last Sagako was sealed. She is now even fused with the Sagako Niji-no matsubara. She free, she can reunite with her older brother, and she breaks down in tears as soon as she sees him. All that time she was always afraid of getting caught in the onion, and she saw and heard the fights that her brother made for her. After all, she is a normal high school girl. Hugging her brother, she realizes that he is much taller than her now, even though they were both the same height when Yuko was sealed. A lot has happened since she got caught in an onion.

After the siblings' reunion, Hanako used a power saw to cut off Yuko's antlers, and since then, they haven't grown back.

Present
It's been 5 years since Tae's death and since Yuko was released from her onion. During that time Yuko met, married, and raised a family with a daughter. On the 5th anniversary of Tae's death, she hosts Anna at her house for her “promised day”. Anna is now a police officer in Tokyo and has reconciled with her family. Yuko tells Anna that she will always be welcome in her “second home”.

Hanako arrives in a surprise entrance, happy to be reunited with her companions and that Sagako did not appear again in Saga. Yuko also informs them that MJ has opened a new adult store that they could go to.

Afterward, they meet with Eikichi and Jofuku at the cemetery where Tae is buried to celebrate their “promised day”. Yuko Hyodo/Historia