- Voice Actor (CV)
- Yumi Uchiyama
- Gender
- Female
- Birthday
- November 1
- Role
- Supporting
- Identity
- The twin elder sister of Byouko Byouinzaka, bearing the title of 'Compensator' to share the lethal burden carried by her younger sister as a Relic Rights Holder, and an operative within the clandestine organization known as 'Gossip'
Personality
Sharp-tongued and sardonic
Calm and calculating
Fiercely devoted to her sister
Driven by an unwavering sense of duty
Houko Byouinzaka stands as one of the most compelling and tragic figures in the series. In their childhood, after her twin sister Byouko killed their parents, Houko made the harrowing choice to deliver the final blow to their dying father—binding herself to the same guilt as a willing act of solidarity. As an adult, she fulfills the role of 'Compensator,' staying close to Byouko and regularly injecting saline solution into the lethal relics her sister carries, suppressing the uncontrollable murderous impulses they trigger. Though outwardly sarcastic and emotionally detached, she transforms into a resolute and fearless protector the moment her sister's safety is threatened, embodying a profound love concealed beneath a cold exterior.