As Nishikawa's career progressed, she began to gain recognition for her exceptional performances. Her ability to convey a range of emotions and bring depth to her characters set her apart from other actresses in the industry. Her popularity soared with the release of her first photobook, "Rion," which became a bestseller in Japan.

Rion is taller, heavier, and technically more refined than his father ever was. However, what he lacks (for now) is his father’s legendary —the ability to come back from a 0-4 start to finish 8-7. In interviews, Rion admits: “My father was tougher than me. I am more skilled. But toughness is learned.”

: Beyond live performance, Nishikawa has been featured in photography projects that highlight the human form in motion, such as those captured by photographer Tomohisa Watanabe Notable Works Digital Presence

Rion Nishikawa began her career in the adult film industry in 2016, at the age of 20. Before entering the industry, Nishikawa worked various part-time jobs, including stints as a model and a waitress. Her entry into the world of adult entertainment was facilitated by her agency, which recognized her potential and offered her a contract. Nishikawa made her debut in the industry with a video released by a prominent Japanese adult film production company.

His early career was meticulously managed. Unlike young stars who rush up the banzuke (ranking list), Rion spent his first year in jonokuchi and jonidan perfecting his yotsu-zumo (grappling style). His father, now “Oyakata” (stablemaster Kizenryu), famously said in an interview: “Let him lose now. Ten losses in the lower divisions teach more than ten wins in the top division.”