Layla, who is approximately 18 years old, has an enigmatic past that remains shrouded in mystery. Despite her stoic demeanor, she is a formidable fighter known for her exceptional skills. Her facial expressions rarely betray any emotion, and she appears to harbor a general disdain towards dolls as a whole. However, there is one exception: Nei, an unregistered doll who travels with her. The circumstances surrounding their meeting remain unknown, but it's evident that Layla holds Nei in high regard and is willing to express emotions when interacting with this particular doll.