These flights are often referred to as "Delta girl" flights because they are staffed entirely by women to inspire young girls to pursue careers in STEM and aviation.
There is currently no verified information or official entity known as "Japanese Delta Girls." Search results for this specific phrase point toward unrelated topics like Delta Airlines flight reviews to Japan or generic digital designs.
: "Delta" likely refers to a specific group of performers, influencers, or a "circle" (doujin group) based in Japan. The Content
For those researching “Japanese Delta Girls” seriously: