She is a third-year student at Municipal Kanon Elementary School. Ako's alter ego is Cure Muse. Ako is initially introduced as a reserved and somewhat abrasive girl, quick to lash out and treat those around her rudely and inconsiderately.

Spoiler

In her Masked form, Cure Muse is very aloof and mysterious. She insists that she's not an ally of the other Cures, though she does often show up to lend them her aid. She does not speak in this form, instead allowing Dodory to speak for her.

Spoiler

After her identity as Cure Muse is revealed and she finally joins the rest of the Pretty Cures outright, Ako lets down her cold exterior somewhat. She reveals herself to be a sweet and considerate girl who enjoys music and loves to sing. She acts somewhat mature for her age and seems capable of understanding things most kids her age wouldn't.