Yayoi Kunizuka, once a musician in the Sibyl-sanctioned punk band *Amalgam*, saw her life derail after her ties to Rina Takizaki—a member of an anarchist underground group—tainted her Psycho-Pass, branding her a latent criminal. Confined to rehabilitation, she reluctantly accepted Shinya Kogami’s offer to join the Public Safety Bureau as an Enforcer, driven by hopes of reuniting with Takizaki. Their confrontation during an anarchist investigation ended abruptly when her Dominator jammed mid-intervention, a failure that steeled her commitment to the PSB. Cool under pressure, Yayoi masked emotions behind analytical precision, excelling in drone operations and tactical fieldwork. Yet glimpses of empathy surfaced, like consoling Mika Shimotsuki after a peer’s death. Initially skeptical of Akane Tsunemori’s leadership, she grew into a trusted ally, bridging divides between Tsunemori and Shimotsuki with quiet diplomacy. Her romance with analyst Shion Karanomori ignited after Shion erased a damning video sent by Takizaki. Though wary of Shion’s flirtatious charm and bisexuality, Yayoi stood by her through crises, including a near-fatal stabbing. After leaving the Bureau, their paths diverged until the Bifrost case reunited them, culminating in a shared life post-rehabilitation. Post-PSB, Yayoi reclaimed her status as a citizen, transitioning to detective work while retaining punk-rooted principles. Her motto—“Do not make trouble for others”—echoed Joe Strummer’s ethos: “Punk is attitude, not style.” Off-duty hoodies contrasted sharply with professional attire, mirroring her blend of rebellion and duty. She fostered a sibling-like bond with Shusei Kagari and defended Nobuchika Ginoza during clashes with Shimotsuki, balancing loyalty to peers with systemic pragmatism. From defiant musician to resilient enforcer, her journey wove personal conviction into the fabric of a society she once resisted.