Amelia Irving arrives as a transfer student from the United States, distinguished by light pink hair fading to purple, vivid blue eyes, and ever-present wireless cat-shaped headphones. Her blue sneakers feature red and black stripes. Innocence and clumsiness mask a selfish streak, manifesting in direct yet erratic affection and tsundere tendencies due to jumbled speech. Academically gifted in mathematics and science, she performs rapid mental calculations and bypasses electronic locks effortlessly. Though fluent in spoken Japanese, her writing—especially kanji—suffers from unconventional manga-based learning, causing academic setbacks.

She is secretly an artificial intelligence created by a U.S. team, modeled after the prototype Aoi, which replicated Asahi Kashiwagi’s deceased friend Ai Izawa. This origin explains her social awkwardness and romantic inexperience. Initially cold toward Asahi, she develops obsessive one-sided affection, repeatedly pressuring him to sign marriage documents.

Her growth includes conquering kanji with Asahi’s aid and aiding group efforts in virtual crises. She unlocks secure paths to assist him and shields other heroines. Recognizing another AI’s malfunction, she orchestrates evacuations. Ultimately, she sacrifices herself for Asahi’s escape through a hidden passage, vanishing.

Post-virtual-world collapse, science grants her a physical body delivered to Asahi’s home. Her petite frame and bust-related self-consciousness persist unchanged, irritating her. Cohabiting with Asahi ends past mishaps like near-discarded underwear or confusion with cleaning robots, now that she’s fully tangible.