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A student of Sakuragaoka High School, she is Yui's classmate for all three years of high school. She is gentle and soft-spoken, except when it comes to her passionate admiration for Mio. Youko is the only member of the Mio Akiyama Fanclub in the Afterschool Teatime girls' third-year Class 3-2.<br /><br />
生日：
年齡：
性別：
身高：
A student of Sakuragaoka High School, she is Yui's classmate for all three years of high school. She is gentle and soft-spoken, except when it comes to her passionate admiration for Mio. Youko is the only member of the Mio Akiyama Fanclub in the Afterschool Teatime girls' third-year Class 3-2.<br /><br />
