Biodata
| Feature | Value |
|---|---|
| Name | Umi Sonoda (园田海未) 3 |
| Gender | Female 32 |
| Affiliation | Otonokizaka Academy; μ's; Archery Club; student council 51 136 173 |
| Occupation/Role | School idol, μ's lyricist and practice organizer; student council vice president 50 71 104 173 |
| First Appearance | Chapter 3 3 |
Background and History
As a child, Umi wanted to play with Honoka Kosaka and Minami Kotori but was too shy to approach them. Honoka invited her into their game, beginning their friendship 68. Years later, when Honoka proposed becoming school idols to help save Otonokizaka Academy, Umi initially refused: she believed idol work demanded more than curiosity. With Kotori's encouragement, she joined them, and the three formed the group that became μ's 47 48 51.
Umi wrote lyrics for the group's first song, though she was embarrassed when Honoka and Kotori brought up the poems she had written in middle school 50 51. Preparing for their first live exposed her stage fright. She struggled to hand out flyers and objected to the short skirt of her costume, but promoted the show after encouragement from her friends and Senba Gari 54 55 56. When the auditorium had almost no audience, she performed alongside Honoka and Kotori anyway 57.
Umi later took charge of practice planning. After seeing footage of Eli Ayase dancing, she asked Eli to teach μ's, believing their dancing needed to improve before they could move an audience 71 84 88 104. She also served on the student council with Honoka and Kotori, pressing Honoka to take her duties as president seriously 173.
Kotori's plan to study abroad strained the three friends. Umi knew about it before Honoka and felt guilty for keeping silent 134. When Honoka announced that she would quit being a school idol, Umi slapped her; afterward, she admitted that she wanted to continue but could not imagine doing so without Honoka and Kotori 135 136. She eventually told Honoka how much her leadership had meant to them and urged her to stop Kotori from leaving 138.
Appearance
Umi has long, straight blue hair. For μ's first live, part of it was tied into a bun with a blue ribbon 56 173 226.
- Her first performance costume was a light-blue dress; uncomfortable with its skirt length, she initially wore sweatpants underneath 55 56.
Personality
Umi is disciplined and cautious, often questioning Honoka's impulsive plans and insisting that school idols take their work seriously 47 48. She can organize demanding practice schedules, but public attention makes her self-conscious: she struggles with cameras, promotion and performing before strangers 54 55 69 104.
She is protective of her friends. Umi refused to abandon an injured Kotori while a Mlortha pursued them, worried when Honoka practiced without enough rest, and reassured Kotori that her costume-making mattered to μ's 34 95 128. Although Honoka's ideas often exasperate her, Umi credits Honoka with giving her the courage to become an idol 138.
Abilities and Skills
Archery and Kendo
- Umi belongs to the Archery Club, where she practices regularly and prepares for competition; she is shown hitting the bull's-eye with a wooden arrow 51 136.
- She has years of kendo training and senses that she is being watched before the Black Cat Mlortha attacks her 32.
Lyrics and Practice Planning
- Umi writes lyrics for μ's, drawing on her earlier experience writing poems 50 51.
- She leads idol practice, emphasizes visualization training and prepares a detailed training-camp schedule 71 104.
Relationships
- Honoka Kosaka — Childhood friend and fellow founding member of μ's. Umi challenges Honoka's recklessness but ultimately asks her to keep leading the group 47 68 138.
- Minami Kotori — Childhood friend and fellow founding member. Umi refuses to leave her behind during an attack and struggles with the prospect of her studying abroad 34 136.
- Senba Gari / Kamen Rider Divine — Teacher and supporter of μ's who rescues Umi from the Black Cat Mlortha. He later encourages her to promote the group's first live 32 55.
- Eli Ayase — Initially opposes μ's activities; Umi later seeks her help with dance training 47 84 88.
- Mari Sonoda — Umi's mother, who notices when she is distracted and reminds her to rest 223.
Notable Quotes
“We've long since gotten used to being dragged around by you, Honoka. So as compensation, please lead me forward! Lead us to an unknown world!” 138