The romanization of Japanese is the application of the Latin script to write the Japanese language. This method of writing is known as rōmaji (ローマ字^?) (Japanese pronunciation: [ɽóːmadʑi]  listen (help·info)), less strictly romaji, literally "Roman letters", sometimes incorrectly transliterated as romanji or rōmanji. There are several different romanization systems. The three main ones are Hepburn romanization, Kunrei-shiki Rōmaji (ISO 3602), and Nihon-shiki Rōmaji (ISO 3602 Strict). Variants of the Hepburn system are the most widely used.

Japanese is normally written in logographic characters borrowed from Chinese (kanji) and syllabic scripts (kana) which also ultimately derive from Chinese characters. Rōmaji may be used in any context where Japanese text is targeted at non-Japanese speakers who cannot read kanji or kana, such as for names on street signs and passports, and in dictionaries and textbooks for foreign learners of the language. It is also used to transliterate Japanese terms in text written in English (or other language that uses the Latin script) on Japanese topics such as linguistics, literature, history, and culture. Rōmaji is the most common way to input Japanese into word processors and computers, and may also be used to display Japanese on devices that do not support the display of Japanese characters.

Ayumi Hamasaki (浜崎 あゆみ, Hamasaki Ayumi^?, also 濱崎 歩; born October 2, 1978) is a Japanese singer-songwriter, record producer, model, lyricist, and actress. Also called "Ayu" by her fans, Hamasaki has been dubbed the "Empress of Pop" because of her popularity and widespread influence in Japan and throughout Asia. Born and raised in Fukuoka, she moved to Tokyo at fourteen to pursue a career in entertainment. In 1998, under the tutelage of Avex CEO Max Matsuura, she released a string of modestly selling singles that concluded with her 1999 debut album A Song for ××. The album debuted atop the Oricon charts and stayed there for four weeks, establishing her popularity in Japan.

Hamasaki's constantly changing image and tight control over her artistry has helped her popularity extend across Asia; music and fashion trends she has started have spread to countries such as China, Singapore, and Southeast Asia. She has appeared in or lent her songs to many advertisements and television commercials. Though she originally supported the exploitation of her popularity for commercial purposes, she later reconsidered and eventually opposed her status as an Avex "product".