Description
The Death Metal Voice manifests as Retsuko's alternate persona, emerging during intense emotional release when she vents accumulated frustrations through death metal singing at karaoke bars. Visually, this state transforms her with corpse paint makeup, sharpened teeth, a devilish tongue, pointed eyebrows, glowing blue eyes, and the kanji for "rage" (烈) on her forehead, creating a stark contrast to her typically mild-mannered daytime self.

Initially a private coping mechanism for workplace stress, sexism, and social anxiety, Retsuko rigorously concealed these solitary karaoke sessions where lyrics channeled rage toward specific irritants like overbearing superiors. Colleagues Gori and Washimi were the first to discover and actively encourage this expression, forming a bond through shared karaoke. Later romantic partners Resasuke and Tadano witnessed it; Tadano's dismissal of her life aspirations prompted a cathartic rejection through death metal. The persona’s role expanded when Retsuko joined the underground idol group OTMGirls as lead singer. Public death metal performances at Rockstock marked a shift toward openness, though this stint ended after a near-fatal encounter with an obsessed fan.

Discovering Haida's involvement in financial fraud, Retsuko used this unfiltered mode to confront him, catalyzing his rejection of corruption. This deepened their mutual reliance, with the persona later facilitating Haida's reconciliation with his authoritarian father. Their marriage followed another life-threatening incident during Retsuko’s political campaign.

In the concluding arc, this vocalization became central to Retsuko’s political identity. Her campaign incorporated the song "Counterattack Rage" (反撃ウブゴエ), performed with OTMGirls, transforming private catharsis into public defiance against systemic injustice, reflecting full integration of this once-hidden aspect.

Throughout the narrative, this mode functions as Retsuko’s primary conduit for unfiltered emotional truth, articulating buried resentment, challenging interpersonal conflicts, and empowering her to assert agency. The progression from secret release to public instrument underscores its role in her psychological resilience and identity formation.