Sakamoto Hakase

 (坂本博士) is a Japanese idol, a founding member of Wodoru Mayonaka, and a former member of AMAKAZE, SUIGETSU, and Ragken! as Riol (りおる).

She joined Ragken! on October 1, 2020 and moved to SUIGETSU with their formation on November 5, 2020.

She was transferred from SUIGETSU to AMAKAZE on May 11, 2021.

She was promoted from AMAKAZE to the founding line-up of Wodoru Mayonaka on December 30, 2021.

Profile

 * Hobbies: Arcade games
 * Charm Points: Jellyfish hair
 * Special Skills: Drumming
 * Favorite Things: Smart phone
 * My Boom: Observing people
 * Stress Reliever: Punching stuffed animals
 * One Thing You Would Shout: 3.14159265359…

Digital Singles

 * Te wo Tatakou