Special Week, a horse girl from Hokkaido, relocates to Tokyo to train at Tracen Academy. Her driving purpose is a promise made to both her adoptive mother and late birth mother: to become Japan's top horse girl, a goal dictating her actions throughout her appearances. Raised in the countryside without significant exposure to other horse girls before Tracen, she exhibits an earnest yet socially inexperienced personality. She compensates with cheerful determination, a strong work ethic, and unwavering positivity despite setbacks. Her straightforward, honest nature sometimes results in social clumsiness. She possesses a notably large appetite, consuming substantial amounts of food quickly – a trait contrasting her real-life counterpart. She is sensitive to cooking sounds and claims expertise in food critique and milk differentiation. Physically, she is slightly shorter than average. Her distinctive appearance features bobbed hazelnut hair with white bangs and a back braid tied by a lavender ribbon. A matching bow adorns her right horse ear. Her rose purple eyes often convey joyful excitement. Her race outfit incorporates design elements referencing her real-life jockey's silks: a zig-zag pattern on the skirt hem and asymmetrical purple and white boots reflecting the purple stripes above her jockey's bootline. A four-leaf clover symbol represents her four G1 victories. Her shoe sizes differ slightly (Left: 23.5cm, Right: 23.0cm), and her weight decreases slightly before races due to nerves. Key relationships shape her journey. Silence Suzuka is her roommate, best friend, and primary object of admiration, significantly influencing her running style and goals. Their connection is partly attributed to sharing the same sire, Sunday Silence, and jockey, Yutaka Take, in real life. Rivalries with contemporaries like Seiun Sky, King Halo, El Condor Pasa, and Grass Wonder provide competitive context, particularly during classic races and senior-class competitions. She maintains connections with classmates like Tsurumaru Tsuyoshi. She is the ancestor of other horse girls including Cesario (who admires her optimism), Buena Vista, and Daring Tact. In Season 1, her story focuses on adapting to Tracen Academy and pursuing her promise. Early successes include consecutive race wins. Her performance declines sharply following Silence Suzuka's fracture injury, as she becomes overly preoccupied with Suzuka's recovery. Recognizing this lapse, she recommits to rigorous training. Her narrative arc culminates in winning the Japan Cup against Montjeu (represented as Broye), securing her status as Japan's top horse girl and fulfilling her promise. Within the special episode "BNW no Chikai," she participates in Team Spica's efforts to reunite the group BNW for a city-wide relay race event. Team Spica facilitates resolving conflicts within BNW to ensure their participation as the event's headline act. Special Week actively runs in the relay race, which features a varied urban course distinct from standard oval tracks. In Season 2, she appears primarily in a supporting role for Tokai Teio's storyline, focusing on Teio's injury struggles. She provides encouragement and camaraderie to Teio and others within Team Spica, reflecting her established place within the group dynamics developed in Season 1. She also appears in Season 3, continuing her supporting role within the ensemble cast.