Hinaria Darkend functions as Codeman 004, one of sixteen such entities. Her origin program is unspecified, and her creator remains unidentified. Multiple mysteries surround her nature beyond functional capabilities and observed traits.

Unemployed and reclusive, she spends her days gaming online. Her personality exhibits a lackluster quality with frequent self-directed speech. She lives as a shut-in. Physically, she presents as a female with yellow eyes and waist-length blonde hair.

Motivated by financial gain, she hacks the Beholder Group's servers. During this breach, she uncovers a heavily secured historical record detailing two witches, Alice and Rimel, who sought peaceful coexistence with humanity. This documented history connects past events to contemporary occurrences in her world, linking narratives across time.

Her personal theme song is "Haitateki Melancholy." Despite revealing these historical connections, her background—including precise origins and the implications of her codeman existence—remains unresolved within available information.