Dakara Watashi Wa Mahou Shoujo O Yameta -

One rainy Tuesday, after her transformation brooch cracks mid-battle, Kano makes a choice: No more.

Desperate, Kano seeks out an underground network of former magical girls living off-grid. Among them is Rin, a cynical 25-year-old who lost an arm in her final battle, and Makoto, a stoic ex-prodigy who now runs a shady courier service. They teach Kano the truth: the magical girl system isn’t a pact—it’s a harvesting contract. Their powers were loaned against their future lifespans. Dakara Watashi wa Mahou Shoujo o Yameta

Here’s a write-up for the premise “Dakara Watashi wa Mahou Shoujo o Yameta” (Thus, I Quit Being a Magical Girl). After sacrificing her youth, body, and sanity for a thankless world, a veteran magical girl finally retires—only to discover that the system never lets anyone leave quietly. Synopsis: For seven years, 19-year-old Kano Shizuka was a perfect magical girl. She slayed interdimensional horrors, saved cities, and smiled through broken bones and haunted dreams. Her reward? Burnout, a fractured GPA, a family who no longer recognizes her, and a “mentor” who treats her like a spent battery. One rainy Tuesday, after her transformation brooch cracks

She tosses the brooch into a river and walks away. They teach Kano the truth: the magical girl

But quitting isn’t freedom. Her ex-contract’s sentient mascot, Kyubey-like but crueler, starts erasing people’s memories of her—starting with her mother. Other retired magical girls begin dying under mysterious “accidents.” Worse, the monsters she used to fight now hunt her as a rogue asset.