The continued interest in figures like Ayaka Oishi is often tied to the history of physical media in Japan. Before the advent of ubiquitous streaming, the collection of DVDs and photo books was a primary way for fans to support their favorite idols. This has left a legacy of:

These releases document the fashion, technology, and aesthetic preferences of the Heisei era.

Talents were often featured in specific series that promised a certain level of artistic direction, helping to build a loyal following for both the performer and the production house. The Cultural Context of Physical Media