Makoto Yuuki is a male student at Yumenosaki Private Academy and a member of the idol unit Trickstar under STARMAKER PRODUCTION. He possesses short, dark blonde hair parted from the right and green eyes, typically distinguished by blue-rimmed glasses; during his first year, he wore black-rimmed glasses. His school uniform includes an unbuttoned white shirt, a dark blue cardigan featuring red and cream designs, a blue tie, and light brown sneakers with yellow accents. On stage with Trickstar, he wears a blue plaid jacket over a white V-neck shirt, matching pants, green sneakers with white laces, green wristbands, and a gold necklace displaying a combined "T" and "S" design with a star. His casual outfits change seasonally, such as a beige short-sleeved button-down with dark teal jeans for warm weather and a layered jacket over a dark green hoodie for colder days.
Experienced as a child model, Makoto developed unmatched posing techniques and situational awareness. This background caused significant trauma, resulting in a severe fear of cameras that made him freeze or scream when photographed during his first year. He enrolled at Yumenosaki intending to repurpose his modeling skills for idol work, believing it involved less pressure. Despite initial doubts about his idol talents compared to modeling, he committed to this path and gradually overcame his camera phobia with support from Trickstar. His trauma stemmed from prioritizing work obligations over personal feelings, causing him to emotionally shut down during stress. A pivotal moment came when he confronted Izumi Sena, who had repeatedly undermined his identity as an idol, demanding equal recognition and closure regarding his modeling past.
Makoto exhibits an easy-going, lively personality and is knowledgeable about gaming and technology. He serves as Trickstar's social media manager, leveraging his online expertise for unit promotions. While viewing himself as the group's "funny guy," he often functions as the "straight man" in comedic interactions. His personality aligns with the INFP type, characterized by creativity, sensitivity, and a desire to help others, though he easily becomes annoyed or embarrassed. He struggles with focus due to high myopia and feels uncomfortable interacting with girls alone. Despite insecurities, he diligently works to improve his idol skills and supports teammates, particularly noticing when they are unwell. Mao Isara describes him as Trickstar's "conscience" and highlights his striking appearance without glasses.
His hobbies center on gaming, favoring fighting games and appreciating "kusoge" (low-quality games) for their unpredictability and replay value. He excels at video games more than any other character in his universe, including dedicated club members, and plays titles like Animal Crossing. Additional skills include electronics tinkering and online information gathering. Makoto lives with his mother, who raised him alone after divorcing his father—a figure absent due to incarceration, which Makoto avoids discussing to protect his idol image. His name combines "truth" or "genuineness" (Makoto) with a surname homophonous to "courage" (Yuuki). Trivia identifies him as Trickstar's tallest and oldest member; his autograph includes his full name in kanji and a smiley face.