Reiri Hida is a female character from Hybrid x Heart Magias Academy Ataraxia, serving as the supreme commander of Ataraxia and the principal of its middle and high school divisions, as well as the elder sister of Kizuna Hida.
Reiri Hida is introduced as Kizuna Hida's older sister, the one who calls him to Ataraxia at the beginning of the story.
She informs him that he will be used as a military asset in the fight to save the world.
She is portrayed as an almost flawless figure, with brilliant intelligence, striking beauty, superb athletic ability, and a notably voluptuous physique.
Despite her cool perfection, she feels somewhat guilty about having to give her younger brother indecent orders for the sake of the mission.
As a leader, Reiri is severe with both herself and others.
Her strictness comes from a desire to keep people from dying in battle.
Profile
Gender: Female
Height: 165 cm
Measurements: Bust 96 cm / Waist 59 cm / Hips 95 cm
Voice Actor: Rika Kinugawa
Reiri serves as the supreme commander of Ataraxia.
She also holds the position of principal of the middle school and high school divisions.
She stands at the center of the organization's military operations and educational authority.
Her competence and commanding presence make her one of the most formidable figures around her.
Reiri is highly intelligent, disciplined, and demanding.
She expects excellence from herself first, and from everyone else as well.
Although she appears perfect on the surface, she is under constant emotional strain.
One major source of stress is the fact that, in order to carry out Heart Hybrid procedures, she must encourage sexual acts between the female students and her brother.
That contradiction gives her character an especially tense edge.
She is someone trying to save the world while forcing herself to accept methods that deeply trouble her.
Reiri harbors strong resentment toward her mother, Nayuta Hida.
She despises Nayuta for caring only about her own research and not acting like a proper mother.
Her anger grows even stronger when she sees Nayuta taking refuge with the enemy faction.
This deepens Reiri's sense of betrayal and confirms the bitterness she already carries toward her.
Later, after Kizuna and the others defeat Osiris, Reiri receives a core made specifically for her by Nayuta, called Zelcross.
When Kizuna installs the core into her, she finally becomes the long-awaited owner of a Heart Hybrid Gear.
With the power of the magical armor Zelcross, Reiri overwhelms Odin, who had been cornering Aine Chidorigafuchi and the others.
Fighting alongside Kizuna and his allies, she helps defeat Odin.
This moment marks a major turning point for her.
Not only does she gain the power she had long awaited, but her relationship with her mother also begins to shift.
After Nayuta becomes a machine god, Reiri starts to wonder if genuine maternal feelings had finally begun to awaken within her mother.
That possibility adds a more human and emotional dimension to Reiri's otherwise severe and controlled personality.
Reiri is described as exceptionally beautiful and physically impressive.
Her body is especially emphasized as highly curvaceous, with an estimated H-cup figure.
This glamorous appearance contrasts with her stern, disciplined demeanor.
The mix of elegance, authority, and sensuality makes her especially memorable.
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