Kokomi Kikyōin sports a vibrant cascade of long green hair secured in a high ponytail by a white ribbon, with curled bangs sweeping across her forehead to frame vivid green eyes. A white hairband topped with a cheerful yellow bow sits above her styled locks. Her attire consists of a forest-green button-up school uniform edged in gold trim, bearing a distinctive emblem, paired with polished brown shoes.

Playfully mischievous and quick to act, Kokomi thrives on teasing humor, particularly toward her friend Kana Hoshisato. She unapologetically resurrects Kana’s childhood nickname “Hatena” in casual exchanges, brushing past Kana’s visible unease with a grin.

Her given name, Kokomi (心美), intertwines the characters for “heart” or “soul” (心) and “beauty” (美), while her surname, Kikyōin (桔梗院), merges “Chinese bellflower” (桔梗) with “institution” (院), evoking imagery of resilience and structure.