This cyclical horror is the "Link." It is a perpetual motion machine of suffering and heroism.
The villains of the series, known as the "Architects," seek to enforce a stagnant, unchanging definition of beauty and order. Ironically, they are visually plain, representing the societal status quo that demands conformity. Lune’s resistance through extreme modification creates a paradox: she fights against a tyrannical order by becoming a chaotic, modified "monster." extreme modification magical girl mystic lune link
To understand the extremity, we must first define the link. In traditional magical girl lore, a "link" refers to the symbiotic connection between a human host and a celestial sponsor (usually a talking mascot creature or a moon spirit). The takes this literally. This cyclical horror is the "Link