It looks like you're referring to "Spirit Witchs Gaiden" Volume 04 with the code mxwz — likely a release tag from a scanlation group (e.g., Manga-X-Wizard-Z) or a file naming pattern.
The term "mxwz" is not a standard literary term but is frequently seen as a tag or suffix in digital file naming conventions for media shared online, often indicating a specific source or release group. Context of the Work spirit witchs gaiden v04 mxwz
Spirit Witch's Gaiden (v0.4) is a fantasy RPG adventure developed by MXWZ that follows the story of Princess Sophya. Following her coming-of-age ceremony, Sophya finds herself betrayed by her uncle and the state elite, waking up in a mysterious dungeon after the sudden disappearance of her mother. Key Features and Updates (v0.4) It looks like you're referring to "Spirit Witchs
, where the developer offers the trial for free while accepting optional support contributions. Further Exploration Following her coming-of-age ceremony