Born in Hokkaido, Special Week lost her birth mother shortly after birth. Raised in relative isolation by a surrogate mother, she developed a quiet, obedient demeanor early on. This upbringing fueled a deep desire to honor both mothers by becoming Japan's top umamusume. Pursuing this dream, she relocated alone to Tokyo and enrolled at Tracen Academy. Her personality combines bright enthusiasm with unwavering determination, tempered by naivete stemming from limited prior social interaction. Academic struggles contrasted with her athletic prowess, requiring study sessions with peers like Silence Suzuka and Tokai Teio. She possesses a significant appetite, often depicted overeating to the point of a bloated belly, contrasting her real-life counterpart's documented eating habits. She maintains regular letter communication with her surrogate mother and updates her phone background photo during each home visit. Visually, she has light purple eyes inherited from her birth mother, a brown-purple bob haircut with white bangs, and stubby brown ears featuring a purple bow on the right. Her race outfit incorporates design elements referencing her real-life achievements: a four-leaf clover for four G1 wins and zig-zag patterns mirroring her jockey's silks. She wears asymmetrical boots—dark purple on the left, white on the right—reflecting purple stripes above her jockey's real bootline. Relationships are central to her development. Silence Suzuka serves as her roommate, admired mentor, and emotional anchor; Suzuka's injury once caused Special Week's performance to decline due to excessive concern, requiring her to refocus on training. Her rivalries include Seiun Sky and King Halo (part of their "Golden Generation"), the undefeated Grass Wonder, and El Condor Pasa. Familial connections encompass daughters Cesario and Buena Vista, and great-granddaughter Daring Tact, referenced within her interactions. Her racing career mirrored real-world events. Early successes included two debut victories, though initial audience approval was tempered by underwhelming "Winning Concerts." Key races defined her growth: a Yayoi Sho win against Seiun Sky and King Halo; a Satsuki Sho third place; a triumphant Japanese Derby victory; and a Japan Cup win against Montjeu (named Broye in media) that solidified her status as Japan's top umamusume. Persistent defeats by Grass Wonder, especially in the Takarazuka Kinen and Arima Kinen, remained unresolved challenges. Training and perseverance underpinned her progress. Initial clumsiness and nervousness—manifesting in difficulties with train station ticket gates or pre-race weight loss from stress—gradually gave way to resilience through disciplined practice. Team Spica provided foundational support, with karaoke sessions addressing performance skills and communal activities fostering camaraderie. Her Hokkaido accent surfaced during home visits. Her narrative arc culminated in the Japan Cup victory, fulfilling her promise to become Japan's finest umamusume. This achievement coexisted with enduring rivalries and the acknowledgment that competitors like Grass Wonder remained unconquered. Her story reflects personal aspiration, homage to maternal figures, and the legacy of her real-life counterpart's racing record.