Ageha Chono leads the Butterfly Law Office as senior partner, a firm specializing in defending clients accused of magical crimes. She oversees operations and manages a team of wizard barristers including her younger brother Seseri Chono, Cecil Sudo, and Koromo Sasori. Ageha employs a pragmatic approach to legal challenges, occasionally bypassing regulations to secure favorable client outcomes and devise solutions for complex situations.

Physically, Ageha has vibrant orange hair typically tied in pigtails and sharp yellow eyes. She wears purple square-framed spectacles and stands 168 cm tall. Her attire features a red blouse layered under a pale yellow sweater, brown shorts, and a purple robe. Accessories include hoop earrings with inverted heart-shaped stones, a pink hearts bracelet, butterfly-shaped hairpins, red lipstick, and pink nail polish.

Ageha maintains a calm and collected demeanor, commanding respect from colleagues who rarely challenge her decisions. She intervenes in conflicts only when unavoidable, preferring minimal-effort resolutions. Though inherently kind-hearted and caring, she adopts strictness when professional demands arise. She exhibits unwavering dedication, treating every case with grave seriousness regardless of difficulty. Her leadership accommodates her team’s eccentricities, reinforcing the firm’s "Bunny-Ears Lawyer" dynamic.

Her surname "Chono" merges the Japanese words for "butterfly" (蝶) and "field" (野).