Shoko Nagahiro was a Japanese voice actress born on October 23, 1991, in Kanagawa Prefecture. She was active in the entertainment industry from her debut in 2014 until her retirement in 2022. She pursued her dream of voice acting after completing her studies at Human Academy.

Nagahiro's voice acting career began in 2014 with her first role as Rusty Nail in the anime series Strange Plus. That same year, she took on one of her more recognized roles, providing the voice for Sora Sarutobi in the short-form anime series Inugami-san to Nekoyama-san. Her other anime credits included minor roles in series such as Okusama ga Seitokaichou!. Beyond anime, her work extended to voice acting in video games like Arcadia no Aoki Miko and Tokyo Harlem, as well as dubbing for foreign films including Terrifier, Deadly Game, and Snake Outta Compton.

A significant and enduring part of her career was in radio. She was a long-standing host on the bayfm program MOZAIKU NIGHT for nearly a decade. This long-running role established a strong connection with her audience, who affectionately nicknamed her Nagashou. She also participated in radio dramas and other web series and columns. Her agency affiliation throughout her career was Three Tree.

On her 29th birthday, October 23, 2020, Nagahiro announced her marriage on her official blog. In early 2021, she publicly shared that she had been diagnosed with endometriosis and uterine fibroids, leading her to pause her entertainment activities to focus on treatment. During this hiatus, she gave birth to a child. In October 2022, she officially announced her retirement from the entertainment industry. Despite her retirement, she made a one-night-only return as a guest for the final episode of MOZAIKU NIGHT, demonstrating her lasting affection for the show and its listeners.