Emma Verde is a third-year Nijigasaki High School student who transferred from Switzerland to pursue school idol activities. Hailing from Switzerland's Italian-speaking cantons of Ticino and Grisons, evidenced by her Italian greeting "Buono" and surname meaning "green," she keeps close ties with her eight younger siblings through video letters and weekly webcam calls to counter homesickness. Kind, approachable, and radiating calm, Emma strives to encourage others and elicit smiles, though she internalizes personal worries to avoid burdening them. She shares a strong bond with Kanata Konoe, rooted in their mutual experiences as older sisters. Emma resides in a dormitory with Karin Asaka, forming a close friendship. Her motivation to become a school idol ignited in childhood during a Swiss snowstorm when she saw school idols on television. This inspired her to study Japanese and move to Japan. Her primary goal is to appear on television as a school idol so her Swiss family can witness her performances, believing it will bring joy to her siblings. Emma enjoys extensive outdoor activities like woodland walks, river play, and sunbathing, often spending up to seven hours immersed in nature. She practices quilting, owns a pet goat named Neve, and favors bread crusts, particularly praising Japanese loaves' fluffiness. She also exhibits enthusiasm for supermarket visits and watches travel shows featuring hot springs. Physically, Emma stands 166 cm tall with auburn hair typically styled in two low braids, freckles across her nose, and light blue eyes. Her image color is light green (#84c36e). Her development includes overcoming nervousness through idol activities and forming meaningful connections within the club. She performs in the subunit QU4RTZ, collaborating with Shizuku Osaka and Kanata Konoe. Emma admires Mai Natsukawa, the performer of "Aion no Uta"—the song that initially inspired her idol aspirations. Notable trivia includes her surprise at Japan's crowded trains, her participation in a dumpling eating contest where she nearly defeated Hanayo Koizumi, and her childhood experiences caring for Swiss livestock. She expresses a desire to showcase the Swiss Alps' scenery to others.