Unlike western actors who bulk up for superhero roles, Kamiki transforms through posture. In the 2024 yakuza thriller Kizuna , he lost 12 kilograms to play a drug-addicted informant. He gained immediate respect from veteran co-stars by performing his own stunt fall down a concrete staircase.
Directors frequently cite Kamiki’s eyes as his primary weapon. In the NHK morning drama Hanbunko (2023), he played a visually impaired pianist. Without relying on sight, he used his eyelids and head tilts to communicate terror and hope. It was a performance that required watching, not listening. Rei Kamiki