Chiyo Ousaki has carved a niche in the world of physical media as a prominent figure in the Japanese entertainment scene, particularly through her work in the beloved Idol franchise. Her standout performances in *THE IDOLM@STER CINDERELLA GIRLS 10th ANNIVERSARY M@GICAL WONDERLAND TOUR!!! MerryMaerchen Land Day1* and Day2 (both released in 2022) showcase her dynamic range and ability to connect with fans, making these titles highly sought after by collectors. These performances not only highlight the evolution of the Idol genre but also serve as a celebration of a decade of fandom, encapsulating a moment in time that resonates deeply with the community. Collectors are drawn to these releases not just for their entertainment value but also for their cultural significance, as they represent a milestone in the history of Japanese pop culture. As Ousaki continues to thrive in her career, her contributions remain a cornerstone for enthusiasts looking to preserve and honor the legacy of physical media in the Idol genre.