before graduating on November 23, 2008, citing health issues.

The transition of , a former member of the Japanese idol group AKB48 , to the adult video (AV) industry under the pseudonym Riko Yamaguchi is a well-documented event in Japanese pop culture. Career Summary

Nakanishi Rina made her AV debut in June 2022, under the stage name "dv1184." Her debut video, titled "Issen ichi man no koi" (One in a Million Love), was released to much fanfare and media attention.

, made a significant transition in her career that drew widespread media attention [1, 2]. After departing the group in 2008 due to health issues, she debuted in the adult video (AV) industry in 2010 [1, 3]. Key details regarding her debut include: Stage Name: She adopted the alias Riko Yamaguchi for her career in the adult industry [1, 2]. Debut Title: Her debut video was released under the code , produced by the studio Alice Japan [1, 2]. Significance:

Upon entering the AV industry in 2010, she adopted the stage name Riko Yamaguchi (やまぐち りこ) to create a legal and official separation from her former idol group.

After a brief hiatus and an attempted return to mainstream entertainment, she announced her permanent retirement from "showbiz" in June 2010. However, just one month later, the news broke that she would be re-entering the public eye under a new persona: . The Landmark Debut: DV-1184