Nagisa Akatsuki

is the daughter of Gajou Akatsuki and Mimori Akatsuki, the younger sister of Kojou Akatsuki and a childhood friend of Yuuma Tokoyogi who attends Saikai Academy where she is good friends with Yukina Himeragi and Kanon Kanase, who are all in the same Class 3-C.

Appearance / Personality
Nagisa has black hair that is usually tied up in a high ponytail by a mint-blue ribbon with bangs hanging over her forehead and reddish-brown eyes. She is usually seen wearing the Saikai Academy uniform.

Nagisa has a cheerful and playful personality who very chatty with people she likes, such as Kojou Akatsuki or Yukina Himeragi.

She sometimes seems to lacks the ability to read to mood. An example of this was when La Folia Rihavein kissed Kojou, she seemed to be only excited and curious about it not at all considering the predicament of her brother among the angry stares of Yukina, Sayaka Kirasaka and Asagi Aiba who were all jealous. She also has a certain dislike to Sayaka, due to an earlier incident where she attacked her brother and acted hostile towards her grabbing her arm to not let her run away. She also has a tendency to address her family members by their names.

Background
Nagisa had trained as a spirit medium with her grandmother. She also inherited the blood of a hyper adapter from her mother making her an extremely rare hybrid. Four years ago, she suffered serious injury caused by the meddling of the Black Death Emperor Front during the excavation of Avrora Florestina. She was left in a vegetative state and was brought to Itogami Island to receive special treatment. Unknown to others, Nagisa was being possessed by "Root". Roughly about three and half a year later, "Root" had awakened as the fourth primogenitor in Nagisa's body and hunted the other Kaleid Bloods to consume them. Having no memories of it's own, it began to feed on human's memories as memories are sources of magic and mass vampire turning incident occurred creating havoc in Itogami Island. However, Avrora and Kojou Akatsuki managed to destroy "Root". Nagisa managed to transfer Avrora's consciousness inside herself just before she perishes. Since then, she lost her powers and any memories related to Avrora. After the incident, her mother became her personal physician.

Abilities

 * Avrora Florestina: Avrora's consciousness resides within Nagisa, therefore she is able to summon the 12th Familiar: Alrescha-Glacies. The familar is capable of creating temperatures of absolute zero.

Trivia

 * Nagisa is voiced by Rina Hidaka in the anime adaptation of Strike The Blood.
 * She shares a voice actor with: Yuniko Kouzuki (Accel World), Mimina Ousawa (Ladies versus Butlers!), Airi Kashii (Ro-Kyu-Bu!), Silica (Sword Art Online), Kurumi Nukui (Angel's 3Piece!), Last Order (A Certain Magical Index).