- Voice Actor (CV)
- Aya Endou
- Gender
- Female
- Age
- 16
- Birthday
- July 26
- Role
- Supporting
- Identity
- Former heiress candidate of the Hiiragi Clan, pioneering developer of Cursed Gear for the Imperial Demon Army, the Black Demon 'Mahiru-no-Yo' bound within her lover's blade, and the cherished beloved of Guren Ichinose
Personality
Prodigious & Calculating
Passionately Obsessive
Masterfully Strategic
Tragically Unhinged
Mahiru Hiiragi, the extraordinarily gifted eldest daughter of the Hiiragi Clan, stands as the trailblazer behind the development of Cursed Gear technology. Driven by an unyielding desire to protect her lover Guren Ichinose and defy the fate imposed by the Progenitors, she willingly descended into demonhood, binding her very soul to the blade Guren carries. In the second season, she manifests as the Black Demon 'Mahiru-no-Yo,' operating from within to guide Guren's every move — serving as the linchpin that unravels the truth behind the world's collapse and the conspiracies lurking in the shadows.