Japanese traditional tattoos, also known as irezumi, horimono, or tattooing in Japanese culture, have been practiced for centuries. The technique of tattooing is believed to have been introduced to Japan by the Ainu people, an indigenous people of Japan and Russia, in the 12th century. Japanese traditional tattoos are characterized by their bold lines and vibrant colors, often depicting mythological or natural subjects such as dragons, tigers, birds, and flowers. The tattoos are usually applied by hand, using a bamboo stick and a needle. They are usually done in one sitting, although they can take several sessions to complete. They can be found on both men and women, although they are more popularly associated with men.