: These often refer to specific production labels or distribution codes used in the Japanese idol industry. Codes like "DMC 25" are standard for cataloging specific photobook releases or digital content.
Collectors prize the variant because it is rumored to contain the most intricate "Milky Cat" detailing, requiring the full spectrum of DMC 25 colors to complete. It represents the pinnacle of the Hikaru Aoyama "The One" series. Conclusion
: If DMC refers to a product line or brand (like the video game series), this could be a promotional campaign featuring Milky Cat as a mascot or character, with a special event or product launch happening on the 25th.