Kōichi Kamiki is a Japanese voice actor affiliated with the agency I'm Enterprise. He was born on October 9th and is a native of Nagasaki Prefecture. His career in voice acting began in 2019, with early roles including minor characters in television anime such as Oresuki Are You the Only One Who Loves Me? and Ensemble Stars!, as well as in the web anime Miru Tights.

Kamiki's first regular role and his first leading role came in 2021 when he was cast as Takeru Shirogane in the television anime adaptation of Muv-Luv Alternative. This opportunity marked a significant milestone in his early career. The audition for the studio was his first experience participating in such a process for a TV anime, and he approached it with a strong personal commitment, viewing it as a pivotal chance. He would go on to reprise this role for the anime's second season in 2022 and later in the video game Muv-Luv Dimensions. This role in the Muv-Luv franchise represents the most significant recurring collaboration in his professional profile to date.

Beyond his work in Muv-Luv, Kamiki's voice can be heard in a variety of other media. His anime credits include appearances in Dont Toy With Me, Miss Nagatoro and My Senpai Is Annoying. In the realm of video games, he has voiced characters such as Theo Büchner in God Eater Resonant Ops and provided voices for the games Arteil NEO and Code Geass: Lelouch of the Rebellion Lost Stories. His work also extends to audio dramas, digital comics, and promotional videos for published works. In addition to his acting, he has served as a personality for web radio and streaming programs related to his roles, such as the Anime Muv-Luv Alternative Communication Bureau radio show. His publicly listed interests and skills include rakugo (traditional Japanese comic storytelling), swing dancing, and table tennis.