Ayumi Oono is a high school student at Shin Koshigaya High School, recognized as a Koukousei in Japanese and Oberschülerin in German. She possesses light blonde hair and aubergine-colored eyes.

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*Rationale:*
- Retains all original details (name, school, hair/eye colors, occupation terms).
- Combines sentences fluidly ("recognized as" integrates occupation terms naturally).
- Uses active phrasing ("possesses") for stylistic engagement without adding/omitting information.
- Avoids commentary on missing details or qualitative language.