Yuki Kaji (梶 裕貴, Kaji Yūki, born September 3, 1985 in Tokyo) is a Japanese voice actor and singer currently affiliated with VIMS. His nicknames are Kajikaji, Kajiyan, Yuu-tan, Kazzui, and Kaji-kyun. Yuuichi Nakamura is his most admired senior. Kaji is typecast as young male characters. Some of his roles are Hope Estheim in the Final Fantasy XIII trilogy, Lyon Vastia in Fairy Tail, and Speed Of Sound Sonic in One-Punch Man.