Hayase

Hayase (ハヤセ, Hayase) was a government official from Yanome who became obsessed with the white-haired immortal boy. Even after her death at sixty-two, her legacy and twisted obsession with Fushi himself has continued to endure in the form the Guardian Force Unit, and her restless spirit merging with a Nokker continuously being reborn in her descendants; beginning as her nine-year-old granddaughter, to her great-great granddaughter, to her teenage great-great-great-great grandson onward.

Background
Little is known about Hayase's past, but she seemed to be a respected authority figure, as she had numerous subordinates under her command and was entrusted with overseeing the sacrificial ritual to the Spirit Bear in Ninannah.

After Fushi left Yanome, Hayase spent about four years searching for him, eventually meeting him again on Jananda Island, where she tried to claim him for herself. Though she ultimately failed, she left a lasting impression on Fushi that persisted for several generations in the form of the Guardian Force and her closest direct descendants, most notably her nine-year-old granddaughter Hisame, only great-great-great-great grandson Kahaku, and great-great-great-great-great granddaughter Mizuha.

So strong was her obsession with the otherworldly immortal entity that she willingly merged with the Nokker that assaulted her and to ensure that her strong obsessive love for Fushi would exist for eternity by consistently being reborn through her descendants in hopes that her will of having Fushi's love in return, as well as his children, would be fulfilled in all of her lifetimes if never her own.

Appearance
Hayase was an imposing woman with black hair and dark eyes. She initially had a short bob cut, and wore a dark blue bodysuit and plated armor covering her limbs.

After her encounter with Fushi, her attire consisted of a ragged, yellow collared, red and dark blue cloak, and her hair had grown long while her face and body bore significant scarring from when she was injured.

Personality
Stoic, cunning, and authoritative, Hayase was a competent leader who took her job seriously and with Yanome's interests in mind. Though capable of being friendly and compassionate, her manipulative facade did little to hide her disregard for others' lives, and she never hesitated to coerce or remove those who resisted her.

She quickly adapted to difficult situations and had little issue giving orders under duress. She was also well versed in manipulating people whenever it suited her or her objectives, lulling March and Parona into a false sense of security, and persuading a fourteen-year-old Tonari Dalton into guiding Fushi to Jananda Island, so she could have him to herself.

After encountering the immortal, she gradually became more unstable and possessive of Fushi as her fascination with his powers turned into obsession. Her personality became more intense and disturbed as she regularly professed to him her twisted love and desire to bear Fushi's children, much to the immortal's disgust. She also considered death a kind of freedom and thought of March and Parona's deaths by her hand as her "gifts". She was even enamored with the thought of dying so her form could be used by Fushi and by extension, live forever.

Season One

 * A Rambunctious Girl (debut)
 * A Little Evolution
 * A Larger Vessel
 * Those Who Follow
 * Jananda, Island of Freedom (cameos)
 * The Children's Dreams
 * The Defeated
 * To Continue On
 * Wandering Rage
 * Echoes (obscure cameo; right arm only)

Season Two

 * Infatuation Reborn (final appearance; flashback cameos)

Abilities
Hayase was a formidable opponent on the battlefield, being both an excellent archer and versatile weapon master. She was skilled with the bow, throwing knives, and numerous melee weapons, and few could catch her off guard or match her in a direct confrontation.
 * Expert Fighter

Her physical ability and endurance bordered on superhuman, as she was able to deflect arrows with a pole-arm, outmaneuver Fushi in all his forms, and physically tear a Nokker out of her arm.
 * Peak Human Condition

When a living being dies, its fye (spiritual essence or soul/spirit) can either pass on to Paradise, remain wandering the world as an incorporeal spirit, or be reborn as another by the Beholder. In contrast, Hayase's unusually strong will and restless spirit allowed her to spiritually manifest in her descendants directly, namely those who did not yet possess a fye, meaning she could only reincarnate every other generation once her current incarnation's daughter became pregnant. While her reincarnations do not retain her memories and are essentially their own individuals, they tend to share personality traits in addition to being influenced by their ancestress' last wish.
 * Rebirth/Reincarnation

Quotes

 * "My name is Hayase. I have been ordered to look after you until the ritual is complete. Move back please. No men may come near her. We must not allow her to be tarnished." - Introduction to March's Parents (Chapter 2)
 * "Allow me to warn you: if you run away, Lara will die in your place." - To March (Chapter 2)
 * "It's been a while, Fushi. Poor March, right?" - To Fushi (Chapter 42)
 * "How does it feel controlling that woman? She's so light and nimble, isn't she?" - To Fushi (Chapter 43)
 * "The western Morning Glory is quite potent." - To Fushi after poisoning him (Chapter 6, Chapter 43)
 * "Poor thing. You don't know of love, do you? I just need a little time. If you would only entrust your body to me for one night, I could teach you all about love." - (Chapter 52)
 * "Kill me, Fushi. I want you alone to kill me. Then we'll be together forever, right? Kill me and become me. I assure you, I am much stronger than any of your current vessels. Well, isn't that enticing?" - (Chapter 52)
 * Don't go, Fushi! You don't realize it yet, but you need me!" - (Chapter 52)

Trivia

 * After being mauled by Fushi, in the form of the Oniguma, Hayase grafted Parona's skin onto her own after killing her.
 * Her character is quite similar to that of the obsessive Mikagi/the Progenitor of the evolved Mikage family, a bloodline blended with both human and celestial DNA known as "C Genomes", in the manga and anime Ceres Celestial Legend; both yandere antagonists ensuring that their restless spirit was reborn in their direct descendants to ensure that hey would have the love, if unrequited, of heavenly, otherworldly immortal being.
 * She is voiced by the same woman who voices the half-human, half dog-demon Setsuna in Yashahime: Princess Half-Demon.