Eimi Akechi, formally Amelia Eimi Akechi Goldie, attends First High School as a Class B student. Her mixed heritage includes a quarter British ancestry through the knighted Goldie family, her grandmother's lineage, stemming from international marriages designed to strengthen magical bloodlines. Raised in Japan by the Akechi family, she managed morning duties due to her parents' deep sleeping habits. Though her grandmother intended for her to study in Switzerland, Eimi negotiated to stay in Japan and enroll at First High. She learned the Goldie family's secret magic, Tathlum, marking her eligibility for succession within the family. Physically, Eimi has ruby-lustrous red hair and moss green eyes, with otherwise predominantly Japanese facial features and build. She possesses a petite stature and youthful appearance, often seeming the most childlike among her peers. Her demeanor is consistently cheerful, energetic, playful, and easygoing. She insists on being called "Amy" or occasionally "Eimy," displaying minor tantrums if refused. She carries a pink plush bunny. Magically, Eimi excels as a Course 1 student, ranking fourth academically in her year. She specializes in Artillery Magic under the Movement System, enabling high-speed object acceleration, such as compressing and launching air masses to mimic fireworks. She uses rifle or shotgun-shaped CADs for combat, plus a backup handheld device. Her combat skill features rapid CAD activation and psion supply synchronized with her shooting posture, comparable to practitioners like Morisaki Shun. Key spells include: - **Tathlum**: The Goldie family secret magic, comparable to Million Edge. - **Exploder**: Causes spherical high-speed divergence from an impact point. - **Invisible Bullet**: Enhances force directly via Cardinal Code, bypassing surface-level phenomenon alteration. Eimi co-founded the "Girl's Detective Club" with Honoka Mitsui and Shizuku Kitayama, driven by a love for solving mysteries. The club investigated incidents like assaults targeting Tatsuya Shiba, whom she initially disregarded but later respected for his engineering skills. During Blanche's attack on the school, she helped defeat several assailants. In the 2095 Nine Schools Competition, she represented First High in Newcomers' Division Ice Pillar Break (placing third) and Speed Shooting (placing second). The next year, she won first place in Rower and Gunner alongside Kunisaki Kumiko, using Ice Pillar Break optimized by Tatsuya. Her close friendships include Honoka and Shizuku, frequent collaborators in school activities. She developed one-sided romantic feelings for Tomitsuka Hagane after he rescued her, actively pursuing his attention and reacting competitively when he interacted with others like Chiaki Hirakawa. This fueled school gossip about a potential love triangle involving Erika Chiba. She maintains respectful but wary interactions with Tatsuya Shiba, acknowledging his abilities while occasionally feeling intimidated.