Delmin, a petite demon dragon of the Devil Mint tribe, possesses long turquoise hair, crimson eyes, and lilac horns. Her slender tail mirrors her hair’s hue, ending in a magenta tip. She inhabits an aging apartment, her solitude emphasized by a constant companion—a plush Onigiri Kumaman. Though her demeanor remains calm and monotone, with muted emotional displays, she channels intensity into meticulous tasks, donning glasses sourced from a shop near UnderNorthZawa Station for precision work.

A self-sufficient cook renowned for her fried eggs, she balances domesticity with her role as bassist and vocalist for Mashumairesh!!, wielding an instrument named "Shubitto Uzishiomaru." Her Myumon lineage grants horn-emitted beams, a rare ability underscoring her heritage. Career milestones trace through the DEVILMINTKIRYU PROJECT: debut as a #COMPASS mobile game character (Phase 1), DJ performances under the alias "DJ DEVILMINTKIRYU" at events like Shibuvalley’s 3969 DJ Night (Phase 2), and anime integration with Mashumairesh!! (Phase 3).

Despite understated social interactions, Under North vendors hold her in quiet esteem. Her musical footprint spans solo tracks like "Cinderella Story" and "Dance Floor of the Planet," alongside the collaborative "No Problem!!" with Ruhuyu. Privately, she harbors an affinity for vintage aesthetics and guarded secrets, though their depths remain unchronicled in existing records.