What if being a magical girl was a disease?

They never should have trusted the creatures from space when they claimed to have good intentions. What starts as fun, whimsical powers turns twisted as the girls’ minds are eaten away until nothing but cruelty and sadism remain. Once they realize what they let in, it’s already too late. Soon, there will be nothing left but a mindless, violent shell.

Tsubaki Moto’s big sister was one of those unlucky girls. After her kindness was used against her, the Japanese government turned her into a weapon once her mind began to vanish. Tsubaki thought losing her sister was the worst thing that could happen to her, but that was before she realized that the parasite that destroyed her sister had passed on to her. Now that she’s living on borrowed time, she’s going to damn well take as many magical girls with her as she can before she succumbs.