Neko is a young female Strain and the second clansman of the Silver King, Yashiro Isana. Her true name is Miyabi Ameno. She first appeared in the original K series and remains a central figure in K: Return of Kings. Her background as a Strain is significant, as she awakened to her powers at a very young age and subsequently convinced herself that she was a cat, taking on a feline form to cope with her abilities. Neko possesses the power of sensory interference, which allows her to create complex illusions, manipulate the perceptions of others, and alter or fabricate memories. Within a perimeter centered on herself, she can control what people see, hear, and remember. This ability makes her invaluable for reconnaissance, misdirection, and defense, particularly against the digital and information-based tactics of the Green Clan known as JUNGLE.

Neko's personality is marked by joy, playfulness, and a carefree, energetic demeanor. She frequently initiates playful chases and approaches many situations with a childlike sense of fun. She expresses discomfort with wearing clothes, finding them too restricting, and often appears nude without concern. Beneath this cheerful exterior lies a deep insecurity about her relationships and a profound need for belonging. She is obsessively devoted to Yashiro Isana, whom she calls My Shiro, and her primary motivation is to protect him and remain by his side. Her loyalty to Yashiro drives nearly all of her actions, and she views her role within the Silver Clan as a protector of her family.

In K: Return of Kings, Neko and her fellow clansman Kuroh Yatogami are left vulnerable while Yashiro is missing. Her powers become vital for the Silver Clan's operations, providing crucial support in both gathering information and protecting against JUNGLE's influence. She struggles with the fear of being abandoned or cast aside, which fuels her fierce attachment to Yashiro and her often-contentious but close bond with Kuroh. Despite their frequent bickering, Neko views Kuroh as a trusted companion and a member of her family. Her relationship with Yashiro is the emotional core of her character, representing a source of stability and affection she desperately craves.

Neko's development throughout the series is significant. She transitions from a lost girl who used her illusions to hide from reality into a vital and responsible member of the Silver Clan. Initially relying on her powers to create a comfortable false world, she learns to use them to protect the people she loves and to face the challenges of the ongoing clan conflicts. Her arc is defined by her growing sense of purpose and her willingness to fight for her newfound family rather than retreat into fantasy. Her past as Miyabi Ameno and her awakening as a Strain are key plot points that shape her identity and her relationship with Yashiro, who accepted her as she was.

Notable abilities include her sensory interference, which allows for large-scale illusion casting and memory manipulation. She also exhibits enhanced agility, reflexes, and regenerative capabilities, traits that reflect her cat-like nature and allow her to perform incredible leaps and evade attacks effectively. However, her reliance on playful tactics can leave her vulnerable in more serious confrontations. Overall, Neko is defined by her unwavering devotion, her playful yet insecure personality, and her growth from a hiding, illusion-reliant Strain into a courageous and essential member of the Silver Clan who uses her powers to protect her chosen family.