**Hometown:** Hiroshima
**Height:** 168 cm

The second oldest among the MILLION STARS, Rio is a woman with a sexy body and she knows it. While she likes to use it as her weapon, the results are not as good as she hopes. According to her own words, Rio is never popular among the boys and she doesn't know why. Although that is most likely because, while she has a very attractive body, Rio doesn't know how to charm men at all, and thus, her tactics are always too straightforward and drive men away instead. Although she has a carefree personality, like most adult idols, Rio can often be seen taking care of the younger idols.

While she likes to flaunt her body, Rio wasn't born with it and had worked hard when she was younger to improve her figure; for example, she used to jump rope actively in hopes of having long, sexy legs. As a result, she wants to be able to charm her audience using her body as she sees it as her charm point.

PV made for THE IDOLM@STER Million Live!'s 4th Anniversary.

[Blog](https://ameblo.jp/genki-morisoba/) | [Twitter](https://twitter.com/yamaguchirikako)

Animated music video for the song Seven Count by MILLIONSTARS. Serves as an anime prologue image music video for The IDOLM@STER Million: Live! revealed during the AnimeJapan 2022 event. This prologue stars Mirai Kasuga, who dreams and envisions a future of being an idol.

Manga adaptation of "THE IDOLM@STER Million Live! Theater Days" smartphone rhythm game, focusing on Yuriko Nanao, Momoko Suou and Konomi Baba.
 
Note: Chapter count includes prologue, one 0.5 chapter, three Christmas specials, and six volume omake chapters.

Animated PV of the song "Dreaming!" from THE iDOLM@STER Million Live!, included with the first limited edition of the single "THE IDOLM@STER LIVE THE@TER DREAMERS 01 Dreaming!"

Mirai Kasuga, who wants to carry on a dream she has yet to see. Shizuka Mogami, who yearns to be an idol and is shaken. Tsubasa Ibuki, who does not know what she can be serious about. 
 
At 765 Production new idols gather and everyone's "dreams" will brought into brilliance at the theater! The long-awaited anime of "The IDOLM@STER Million Live!! 
(Source: Official Site, translated)

Rio Momose