|Race||Human (Attack Mage)|
|Age||14 (Later 34 in Strike The Blood Ex)|
|Height||156 cm (5'1")|
|Affiliation||Lion King Organization|
|Occupation||Sword Shaman, Observer, Student|
|Base of Operations||Itogami Island|
|Relatives||Gajou Akatsuki (Father-in-Law)|
Mimori Akatsuki (Mother-in-Law)
Nagisa Akatsuki (Sister-in-Law)
Kojou Akatsuki (Husband)
Reina Akatsuki (Daughter)
Moegi Akatsuki (Step-Daughter)
|Weapon||Schneewalzer (Sekkarou) Lance|
|Anime Debut||Episode 1: Right Arm of The Saint I|
|Manga Debut||Chapter 1: The Fourth Primogenitor|
|Novel Debut||Volume I: Right Arm of the Saint|
|Japanese Voice||Risa Taneda|
Yukina Himeragi (姫柊 雪菜, Himeragi Yukina) is the female protagonist of the series. She is an attack mage, or in the Lion King Organization, a Sword Shaman, sent by the Lion King Organization to observe the Fourth Primogenitor, Kojou Akatsuki. As she's appointed to observe him, she became a middle-school student studying in Saikai Academy who follows him everywhere and is also ordered to kill him if he becomes too powerful and insane to control himself. She is also the first blood mate of Kojou, and thus being the first, her blood smell is always associated with Kojou's own smell, which has been pointed out many times by other characters who could smell blood, probably due to her blood interbreeding with Kojou's as she was the one who activated Kojou's first 'real' vampiric act. Also, unknown to her, she was intended and prepared by the Lion King Organization to be his lover. Twenty years later, in Strike the Blood EX, she and Kojou have a child, who becomes an important figure.
Yukina has the appearance of a very attractive young middle-school girl. She has been quoted often times as extremely cute, that even older male students were interested with her upon seeing her picture for the first time. She was even called the princess of their class and has been begged by all of her male classmates to be their cheerleader in order to win their games. She is often wearing the Saikai Academy school uniform. She has golden-brown eyes and shoulder length black hair with a fringe around the eyes and bangs either side of her face. She also carries around a guitar case around on her back wherein which she keeps her Schneewalzer.
Yukina's personality is accentuated by a peculiar naivety. She generally appears to be soft spoken, sweet and unassuming, but however, a far cry from being a damsel in distress as she is an extremely good fighter, both with hand to hand combat and with lance wielding. Since she was brought up in the Lion King organization as a soldier, her views on the outside world are different like when she went shopping with Kojou, she thought a golf club was a weapon and a pressure cleaner was a flamethrower. She is also can be noted as quite a kind and caring person.
Her goal is to observe Kojou and defeat anyone who she deems a threat. She soon developed special feelings for Kojou which is often hinted through her facial expressions of how upset she is whenever Kojou becomes interested or makes the other girls his blood mate. She has a slight tsundere tendencies. Despite being jealous a couple of times whenever Kojou is around other girls, she never dwells bitterness and hatred towards the other girls Kojou had been interested in, and even on most occasions befriends them, as seen with her interactions with Kanon and Astarte. Yukina is also protective of the people close to her, even if they are capable of protecting themselves. When Kojou were to notice her reaction and asked her 'why' she tends to answer that 'she's his observer', it is apparently for to convince herself more than Kojou himself. She is a close friend of Nagisa and Kanon. She also adores cats.
Right Arm of the SaintEdit
Emissary of the WarlordEdit
Labyrinth of the Blue WitchEdit
Banquet of the ObserversEdit
Return of the AlchemistEdit
Shikigami Summoning: She can summon a Shikigami. A Shikigami can send messages or alert the summoner if anything happens.
Sekkarou: Or the Schneewalzer, the lance grants her support enchantments and it can also utilize divine vibration that can negate magic of any kind. Chant:
- Spirit Enchantment 1 (Offensive):
I, Sword Shaman of the High God and priestess of the Lion, beseech thee. Dawn light of exorcism, spirit wolf of snowy mist, grant me the divine might of thy steel, that I may smite a hundred evil spirits!
Shishi no mikotaru, takagami no kennagi ga negai tatematsuru, hama no shokö, sekka no shinrö, hagane no shini o mochite, ware ni akujin hyakki o uta se tamae!
- Spirit Enchantment 2 (Defensive):
I, Sword Shaman of the High God and priestess of the Lion, beseech thee. Spirit wolf of snowy mist, fashion a shield from the echoes of the thousand swift ones, and expel this calamity!
Shishi no mikotaru, takagami no kennagi ga negai tatematsuru, sekka no shinrö, chihaya no hibiki o mote tate to nashi, kyöhen saika o harai tamae!
Magic: Yukina, along with other orphan children who were trained by the Lion King Organization to utilize magic. Shown techniques:
- Yukina's sizes are: Bust-76(C60), Waist-55, and Hip-78.
- Yukina has a fondness for the plushies, Nekomatan.
- Yukina (雪菜) means "Snow" and "Vegetable".
- 雪菜 is the name for the Chinese Pickled Cabbage.
- Yukina and Reina looked too alike that the only few ways to tell them apart are the color of their eyes and the sizes of their busts.
- Yukina is a "sword shaman" but she uses her lance (Sekkarou) for a fight.