Koigakubo stands at 192 cm, his lean frame paired with sharp, thin eyes and short slicked-back hair. His naturally stern expression—accentuated by a lack of eyebrows—frequently draws comparisons to yakuza, though his demeanor contrasts this assumption. As a high school student in a traditional black uniform, he observes his surroundings with quiet intensity, dissecting social dynamics and unspoken emotions with a perceptive, analytical gaze. This sensitivity leads him to identify the inspiration behind Yatora Yaguchi’s early artwork as dawn in Shibuya, a realization that sparks Yatora’s artistic ambition. Financial instability and self-doubt initially cloud his path, but witnessing Yatora’s commitment to art stirs him to confront his own aspirations. In a vulnerable, tearful exchange, he confesses his longing to become a pâtissier, channeling his fears into action. He enrolls in night classes at a pastry school while laboring at a construction site, his resolve unwavering despite the grueling balance of work and study. Childhood friends Sumida and Utashima, alongside Yatora, form his core social circle. Their bond thrives over football matches, shared drinks, and candid discussions about adulthood. With Yatora, he shares a mutual admiration, often seeking solace in their heartfelt talks about personal challenges. Known for his reliability, he supports his friends with measured advice and homemade desserts—elaborate cakes for birthdays, holidays, or casual gatherings—each confection reflecting his growing skill. Beyond his responsibilities, he names neighborhood cats—recently adopting Mezashi and Shishamo—and navigates Tokyo on a motorcycle. Practicality defines his routines: an apron shields his clothes during shifts, and meticulous planning helps him juggle obligations. As his pastry school achievements mount, Utashima teases him about crafting a wedding cake, a nod to his burgeoning reputation. His past includes a sixth-grade cooking club membership and years shelving dreams due to poverty. Yet through introspection and the encouragement of friends, he transforms uncertainty into deliberate ambition, his journey marked by resilience and the quiet pursuit of a life shaped by sugar, flour, and unwavering perseverance.