Darker than Black: Gemini of the Meteor

A meteor‑born sister awakens her hidden power, thrusting her into Tokyo’s deadly Contractor underworld.

When a meteor shower ignites the night sky, Shion Pavlichenko is ripped from humanity and reborn as a cold‑blooded Contractor, leaving her twin sister Suou to shoulder the ordinary burdens of middle school life. Suou’s world shatters the day a masked figure in black bursts into her home, slaughtering the fragile peace and unveiling a dormant Contractor power within her. Thrust into a shadowy arena of espionage and ruthless mercenaries, Suou must navigate a treacherous balance between protecting her remaining family, preserving fragile friendships, and confronting the grim reality of a world where emotions are commodities and death is a contract. Meanwhile, the enigmatic Hell’s Gate in Tokyo collapses without warning, prompting a frantic investigation that uncovers cryptic omens and a silver‑haired doll that seems to herald catastrophe. As the city reels from the fallout, Suou’s newfound abilities draw the attention of both allies and adversaries, each eager to exploit her latent power for their own ends. Across the fractured landscape of post‑gate Tokyo, the series weaves together high‑octane action, moral ambiguity, and the painful coming‑of‑age of a girl forced to choose between the innocence of youth and the merciless demands of a world ruled by Contractors.

A spy-action thriller where a 13-year-old girl is thrust into a covert war between superpowered assassins, forced to kill while grappling with her brother's transformation and a mentor's self-destruction. Expect frequent bloody combat, heavy thematic weight around child exploitation and trauma, and a protagonist whose alcoholism is a core character trait rather than a gag.