Miya Chinen is a 13-year-old male with black hair featuring distinctive upward strands and aquamarine or sea-green eyes. He stands 154 cm tall, weighs 42 kg, and has blood type A. His birthday is February 22, making him a Pisces. Initially cocky and impertinent, Miya frequently insults others as "slimes" or "trolls," terms drawn from his love of video games. This abrasive exterior stems from past isolation caused by his exceptional skateboarding talent. As a child, he enjoyed skating with friends but mastered skills rapidly, like learning the ollie in two weeks. His growing proficiency and competition awards bred resentment, leading peers to distance themselves, accusing him of seeing them as inferior. A friend, Takashi, declared that "heroes can't team up with slimes," cementing Miya's worldview where he is the hero and others are slimes. This abandonment fostered a fear of close relationships and a belief that improvement inevitably drives people away. Despite his defensive attitude, Miya shows vulnerability and compassion. During a race against Langa Hasegawa at the underground skateboarding event "S," he halted his own progress to warn Langa about hazardous rusty rails, potentially costing him victory. When Reki Kyan promised never to abandon him regardless of skill, Miya became tearful but masked it by calling Reki "weak." This marked the start of his gradual emotional opening, leading to friendships with Reki, Langa, and Shadow. A candidate for Japan's national skateboarding team, Miya adheres to a strict athlete's regimen: a controlled diet and dedicated training schedule. His daily routine includes waking at 6:00 AM for running, attending school, skateboarding practice from 16:00 to 18:00, studying, and playing video games before bed at 23:00. He balances academics and athletics, excelling in mathematics but struggling with sleep due to his busy schedule. His skateboarding features technical precision and versatility. He specializes in complex tricks like board handstands, rail slides, and maneuvering a flipped board with his feet, performing them with ease during competitions and "S" beefs. His freestyle influence is reflected in his custom black skateboard deck with a purple "X" on top, cat motifs underneath, and the word "Game." At "S," he wears a light green hoodie with purple cat ears, purple tail attached to shorts, and orange-accented socks, all inspired by video games. This costume enhances his reputation. Miya's interests extend beyond skateboarding. He enjoys role-playing games, communicates easily with cats, and frequents petting zoos or cat cafés. His favorite food is salt-grilled pacific saury, and he avoids wasabi. He maintains a pragmatic approach to social interactions, meticulously planning outings and carrying practical items like a foldable umbrella. While indifferent to romance, he values companionship through shared activities like gaming or movies. His character design, including his school uniform of a black shirt, embroidered socks, grey shorts, and a beret, emphasizes his youth. The paw gloves and tail on his "S" costume subtly convey his feelings through movement. Miya shows a shift from isolation toward tentative trust. He maintains friendships with Reki, Langa, and Shadow, indicating progress in overcoming his fear of abandonment. Though still struggling with vulnerability, his interactions reveal a growing capacity for connection beyond his self-imposed "hero" persona.