Mio Akiyama (秋山アキーヤマ 澪ミオ) is one of the 5 main characters in K-ON! She is a passionate and technical left-handed musician and writer who serves as the bassist, second vocalist and main lyricist of the band Ho-kago Tea Time. She is a kind and warm girl, albeit very shy and sensitive. Despite her timid streak she often finds herself as the voice of reason amongst her bandmates, who often rely on her sensibility when in trouble.