Satsuki Itō is a 19-year-old part-time high school student affiliated with the rap group AKYR (Akanyatsura). He projects an aggressive image with distinctive orange hair and eyes, usually hidden beneath a dark blue cap. Standing 170 cm tall, he has a lightly tanned complexion and a moderately muscular build. His style is flashy: a yellow-orange basketball jersey, patterned shorts, flame-patterned sneakers, multiple gold chains, bracelets, rings, ear piercings, and prominent sleeve and leg tattoos. His past is defined by trauma and instability. At 11, his family life deteriorated, creating deep insecurity. Wrongfully implicated in a friend Ryoga's fight at 14, he faced incarceration. Released at 15 to an abandoned home, he spiraled into street fighting. Refuge came at 16 with the Suiseki group, a surrogate family shattered a year later when the group was annihilated in violence, leaving him with survivor's guilt and unresolved trauma. Rescued during this vulnerable period by Iori Suiseki, Satsuki joined AKYR, forging unwavering loyalty. Key traumas are captured in #ACloseFriendsBetrayal, #TheCruelStateOfAFamily, and #IWasTremblingAndCouldntMove. Personality-wise, Satsuki embodies a combative delinquent, quick to start fights with outsiders. Yet beneath this rough exterior lies kindness, honesty, and deep devotion to AKYR, whom he considers true family. He speaks brashly using "ore," but his actions reveal protectiveness and vulnerability, particularly an aversion to risqué topics. His MC name "Gaia"—unaware it references a goddess—adds irony to his tough persona. Character hashtags like #InTheMiddleOfPuberty, #DeniesBeingAVirgin, and #PureYankee highlight his adolescent bravado. Within AKYR, Satsuki reveres Iori as a father figure ("Aniki"), finds Zen overly rigid ("stuffy"), and engages in frequent, brotherly squabbles with Reo, rooted in mutual respect. He harbors an unacknowledged crush on Anne Faulkner, oblivious to her background. His disciplined daily routine balances gym workouts, AKYR household chores, late-night homework, video gaming, and attending school—though he often sleeps in class. His phantometal is a butterfly knife activated by licking its blade, symbolizing his constant readiness for conflict. Satsuki openly loves meat, detests mint chocolate, admires "badass women," and aspires to be "Galaxy’s No. 1 Man." He frequents Club CANDY and takes pride in his biceps. Despite his turbulent history, his commitment to AKYR's unity is absolute, willing to stake his life for teammates against group secrets or external threats.