Kanata Yatonokami is the elder twin brother of the Yatonokami family and one half of the hip‑hop duo cozmez. He and his younger brother Nayuta were orphaned in a poor neighborhood and grew up abused by the adults around them, leaving Kanata with a profound distrust of nearly everyone. He is often described as lazy and finds most tasks bothersome, but this apathy disappears when it comes to his brother. Kanata is fiercely devoted to Nayuta and will do anything to protect and provide for him, a commitment that borders on obsessive. The two survive by taking on shady underground jobs and earning money through rap battles, with Kanata performing under the MC name KANATA. His rapping style is angry and confrontational, reflecting his deep resentment toward the world.

Kanata’s role in the story centers on his relationship with Nayuta and their participation in the Phantom Live battles, where rappers use phantometal accessories to create illusions tied to their emotions. Kanata wears an Ouroboros‑shaped earring that he activates by biting Nayuta’s piercing. His traumatic past has left him emotionally closed off, and his only source of trust and warmth is his brother. This bond drives his actions and defines his motivations: he sees no value in anything that does not involve Nayuta. Despite his gruff exterior, he has a softer side that only Nayuta gets to see, earning him a reputation as a tsundere. A notable trait is his instant, almost berserk reaction if anyone mocks or threatens Nayuta, even when the person intends no harm. Kanata’s development throughout the series involves confronting the trauma of being abandoned and learning to navigate a world he despises, all while clinging to the one person he believes is worth everything. His notable abilities include his raw lyrical talent and his capacity to channel his pain into powerful, emotionally charged rap performances.