Kuga is known for her roles in "Drunken Angel" (1948), "The Idiot" (1951), "Older Brother, Younger Sister" (1953), "The Woman in the Rumor" (1954), "Equinox Flower" (1958), "Good Morning" (1959), "Cruel Story of Youth" (1960), "Zero Focus" (1961), "The Story of Osaka Castle" (1961) as Kobue and "Toki o Kakeru Shōjo" (1997).