Description
Tsumugi Aoba stands tall with an average build, pale skin, and shoulder-length dark blue wavy hair accented by turquoise streaks on the left side, his forehead obscured by long bangs. Gold eyes peer through large black-rimmed glasses he keeps despite their outdated prescription, avoiding changes due to nausea and a broader aversion to newness. He often sports dark blue stud earrings and layered outfits like a loose shirt beneath a sweater.

As the eldest and tallest member of idol unit Switch under NEW DIMENSION, he coordinates operations, plans projects, and leverages management expertise to support the group. Tsumugi actively reinvents himself to contribute to Switch, emphasizing forward momentum. His singing voice remains soft, warm, and controlled during performances.

Good-natured and reliable, he sacrifices for others despite clumsiness. Yet he misreads social cues, making blunt or ill-timed remarks, and treats heavy topics lightly. He speaks with unfiltered honesty—particularly toward Natsume Sakasaki and Shu Itsuki—but stays calm in crises, advising others when needed.

Low self-esteem, anxiety, and emotional instability plague him, with past suicidal ideation peaking in his second year. Guilt-ridden, he internalizes insults and deflects reassurances. By his third year, he pursues self-improvement and spreads happiness as repentance, viewing Switch as redemption. His definition of friendship is unorthodox: he considers volatile bonds like his with Natsume—marked by arguments—as "getting along well."

Raised in financial hardship, he developed resilience and managerial acumen. Skilled in tech, he managed his school’s social media and excels in long-distance running, fortune-telling, flower language, and handicrafts. Daily lucky items anchor his routine. His long hair stems from a Buddhist prayer (gankake), tied to a childhood vow with Natsume: should Natsume’s "red string of fate" break, Tsumugi would use his hair to re-tie it.

Gentle with children and rarely without blankets, he feels uneasy around girls after attending all-boys schools. He works late, often overnight, and designed Switch’s unit outfits with Shu Itsuki’s input. His name reflects his essence: "Tsumugi" (紡ぐ—spin a tale) mirrors his narrative-driven phrases like "Let’s spin our tale," while "Aoba" (青葉—fresh leaves) evokes prosperity. Eichi Tenshouin nicknamed him "Bluebird of Happiness" from his surname, inspiring his solo song "Bluebird Humming."