Social media has played an indispensable role in the rise of Ran Niiyama. Platforms like Instagram and TikTok have allowed her to cultivate a direct relationship with her audience, bypassing traditional media gatekeepers. By sharing glimpses into her daily life, fashion choices, and personal interests, she has built a brand centered on authenticity and lifestyle inspiration. For many of her followers, Ran is not just a celebrity to be admired from afar but a source of style guidance and a relatable figure whose journey they can follow in real-time. This digital intimacy is a hallmark of the new generation of stars who understand the power of community engagement.

Looking at her stylistic influence, Ran Niiyama is often cited for her ability to blend classic Japanese fashion elements with contemporary global trends. Her aesthetic frequently features a mix of bold colors, unique silhouettes, and careful accessorizing, making her a frequent subject of street style photography. This influence extends to her fans, who look to her for "outfit of the day" (OOTD) inspiration. Her impact on fashion is not merely about wearing clothes but about curateing a look that tells a story, a skill that has made her a sought-after partner for brand endorsements and creative collaborations.

| Category | Title | Year | Role | | :--- | :--- | :--- | :--- | | | Sukiyaki Western Django | 2007 | Minor Role (Early cameo) | | Gravure DVD | Ran Fiction | 2011 | Herself | | TV Drama | Hirugao | 2014 | Bar Hostess | | TV Drama | Legal V | 2018 | Witness | | Voice Game | Yakuza: Like a Dragon | 2020 | Yui (Hostess) | | Streaming | Ran Niiyama’s Home Gym (YouTube) | 2021–Present | Host |