Seika Hirose is a Japanese voice actress affiliated with the talent agency ARTSVISION. She was born in Tokyo on April 13, 2000. Before beginning her professional career, she trained at the Japan Narration Acting Institute.

Hirose started her voice acting career in the late 2010s, with some of her earliest roles in 2017 and 2018. Her debut work includes providing voices for characters in the long-running anime series Crayon Shin-chan and a guest role in the anime Ulysses: Jeanne d'Arc and the Alchemist Knight. A significant recurring role in her career is as the character Paula in the 2021 fantasy anime series Drug Store in Another World - The Slow Life of a Cheat Pharmacist, the example provided. She is perhaps best known for her role as Champe in the 2020 multimedia project Lapis Re:LiGHTs, which spanned both an anime television series and a video game. Her other voice work includes roles in anime such as Kakushigoto, The Girl in Twilight, and the film Crayon Shin-shot: Burst Serving! Kung Fu Boys ~Ramen Rebellion~. In the realm of video games, she has lent her voice to characters in titles including Eternal Linkage, The Hundred Sword: Mastard -Sena-, and Atelier Resleriana: Forgotten Alchemy and the Polar Night Liberator.

Beyond her anime and game roles, Hirose is also active in music and stage performances, a common path for many voice actors in Japan. She was a member of the voice actor unit teaRLove from its formation in 2018 until its final live show in 2022. She is also part of the unit Sugar Pockets, a group formed within the Lapis Re:LiGHTs project, contributing to several singles and soundtrack albums for the franchise. Her work with these groups includes performing theme songs and character songs, showcasing her musical talents alongside her voice acting. Her profile lists her hobbies as puzzles, playing guitar, singing, and dancing, and her special skills include karate, memorization, and the competitive card game Hyakunin Isshu.