Young Asian Japanese Girl Wearing Various Black Lingerie At Home

The Oxford English Dictionary, states that Asian is used in North America to refer to people originating from East Asia like China, Japan, Korea, etc.
Orientals and the Orient
The term 'Oriental' (from the Latin word for "Eastern") was originally used during the Middle Ages in Europe in reference to the Near East. It was later extended to the rest of Asia, but came to refer to East Asians and in some cases, Southeast Asians in the 19th and 20th century United States, where most Asians were originally Chinese, with later additions of Korean, Japanese, and other groups from Asia.