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.

Sayo Hayakawa is a Japanese fashion model. She is best known for her stint as a main model for the Koakuma Ageha cabaret-gyaru fashion magazine.