Ya Chang (born Yasuaki Yamaguchi) is a Japanese-born actor who lives in the Philippines and appeared in ABS-CBN TV shows such as Aalog-Alog[1] and Quizon Avenue. He also appeared in the drama Maalaala Mo Kaya to portray his own life story. He also assisted the show's crew on their first episode that was set in Japan. He recently appeared as Kenjie in ABS-CBN's Eva Fonda, acting as an antagonist for the first time.