Gyaru pronounced [ɡʲa̠ꜜɾɯ̟ᵝ], is a Japanese fashion subculture. The term gyaru is a Japanese transliteration of the English slang word gal. The initial meaning as a Japanese slang word during the Showa era was similar to the English meaning and referred to a young woman in her late teens to twenties. In the early Showa period, the term Gyaru was also used in a mocking manner towards young women with a "frivolous" lifestyle.

Koakuma Ageha is Japanese magazine that introduces the latest fashion and lifestyle trends popular among hostesses that is published twice a year, with the main target audience being women in their teens to 20s. Fans of the magazine are also referred to as "agejo" and often members of the Gyaru subculture.