TV-Series
Description
Koto Yumeno, the youngest daughter in the Yumeno family, attends Yumegaoka Elementary School as a fourth grader. Her older sisters are Uta and Kanade. Koto's mother, Suzu Yumeno, died during her infancy, leaving Koto with no personal memories of her. Mentions of her mother by her sisters or father, Masahiko Yumeno, often cause Koto to become upset or withdrawn.

Physically, Koto is short in stature with shoulder-length brown hair and brown eyes, traits inherited from her mother. She typically styles her hair in a half-ponytail on the right side, sometimes wears it fully tied up, and lets it down at bedtime. While she has everyday clothes, she is frequently seen wearing a dinosaur costume.

Koto generally displays a happy, cheerful, and outgoing personality. She enjoys playing games and exhibits strong emotional reactions, such as distress when denied things she wants (like a trip to the beach) or deep longing to see her mother. She expresses affection through a unique ritual called "Koto Charge," hugging her father to energize him when he seems tired. Her relationships with her sisters involve typical sibling dynamics: she often bickers with Uta and sometimes irritates Kanade. Initially disliking Jun Hiiragi, she later befriends him.

Within the series narrative, Koto occasionally participates in schemes orchestrated by Kuromi. In *Onegai My Melody Sukkiri♪*, she appears as a minor character with a speaking role only in episode *OMMS10*. She is a member of the Dream Defense Girls Group, serving as the yellow-clad Bunny-eared Ranger. In this role, she wields the "Koto-chan Fire" weapon while wearing her dinosaur costume.

Koto celebrates her birthday on March 27, making her zodiac sign Aries. She participates in a jump-roping group at her elementary school. Her name, "Yumeno Koto," combines "dream" (Yume) and "field/plain" (no) with "harp" (Koto), translating to "Dream Field Harp" or "Dream Plain Harp."