- Name: Matsunaga Riai (松永里愛)
- Birthday: July 7, 2005
- Birthplace: Osaka, Japan
- Height: 150cm
- Specialty: Tongue twisters
- Hobbies: Listening to Hello! Project music, playing with her dog Chloe
- Looks Up To: Sato Masaki, Sasaki Rikako
- Hello! Project groups:
- Hello! Pro Kenshuusei (2017–)
- Made her first live appearance at the "Hello Pro Kenshuusei Happyoukai 2017 3gatsu ~Marching!~" event on March 11, 2017.
- Recieved the Special Award in the 2016 JuniAward by HarajukuMate competition.
- Acted as a junior model for "Dream Girls" magazine prior to joining the Kenshuusei.
- Has won her school's girls division marathon race for 5 years.
- Has an older brother and a younger sister, a model named Nanoa (なのあ).
- Attended an ANGERME handshake event before joining Hello Pro Kenshuusei.
- Her favorite genre of music is J-Pop, mainly Hello! Project.
- Has a Bernese Mountain Dog named Chloe.
- Favorite sport is dance.
- Favorite food is waffles made by her mother.
- Her motto is "Never stray from one's path" (不撓不屈).
- Thinks her charm point is her long hair.
- Her favorite school subject is music.
- Her favorite colors are yellow and emerald green.
- Isn't good with being scolded, baksetball, and insects.
- Thinks both her strength and her shortcoming is being serious.