Kasai Rion

 (河西里音) is a former singer and former member of Chu!☆Lips and Survivё.

She changed her stage name from Kasai Mao (河西舞桜) to Kasai Rion on October 1, 2009.

On April 12, 2021, she announced that she is married and pregnant, and will immediately retire from entertainment.

Singles

 * [2011.09.21] Himawari ~Nanairo no Rainbow~ (ひまわり～七色のRainbow～)
 * [2014.11.01] Kimiiro... (君色...)

Digital Singles

 * [2018.03.07] Arigatou ~Deaeta Kiseki~ (ありがとう ~出逢えた奇跡~)
 * [2018.08.08] Tropical Summer Love
 * [2018.12.20] My Boo ~Sei Naru Yoru~ (My Boo ~聖なる夜~)

Trivia

 * She is the older sister of Kasai Tomomi. They auditioned for AKB48's second generation together, but only Tomomi passed.