小縞 音々子

Mikado's childhood friend and Arisu's older sister. She loves working at the café her parents own and is a very kind and gentle elder sister. She doesn't approve of Mikado's desire to create a Mecha-con and tries to make him give up his dream until her sister Arisu forces her hand.

Term of endearment for her husband 'Anata' ('You'/Japanese equivalent of 'darling').