Agejo (age嬢), a term short for "Ageha Lady," is a substyle of Japanese Gyaru fashion that emerged in the mid-2000s. The aesthetic is heavily inspired by Japanese hostess culture and is defined by its focus on glamour, sexuality, and hyper-femininity. Agejo clothing and makeup are designed to be provocative and revealing while still maintaining a polished and sophisticated appearance.

This style's origin is tied to the magazine Koakuma Ageha, which was popular among young women, particularly those working in the Japanese hostess and adult entertainment industries. Agejo is generally adopted by older members of the gyaru community due to its mature and refined nature. While it shares some visual elements with Hime Gyaru , which appeared around a year later, Agejo places a stronger emphasis on overt sex appeal rather than the princess-like elegance of Hime Gyaru.

Agejo first emerged in the mid-2000s, with its origins directly linked to the Japanese magazine Koakuma Ageha . The magazine started as a special edition of Nuts Magazine in October 2005 but became a standalone publication in October 2006 due to high demand. Koakuma Ageha was specifically targeted at young women, including those who worked in the hostess and adult entertainment industries, and it popularized the Agejo aesthetic.

The style reached its peak in popularity around 2008, with the magazine selling over 300,000 copies. This led to Agejo becoming a prominent substyle of Gyaru , worn both by hostesses and a wider audience interested in its glamorous and mature look.

The style's popularity began to wane after Koakuma Ageha magazine went bankrupt and ceased publication in 2014. As of the late 2010s and early 2020s, however, a small revival of the Agejo style has been observed, alongside a broader resurgence of gyaru fashion. The magazine has resumed publishing in a limited capacity since 2021, and a dedicated community of enthusiasts, particularly overseas, continues to practice the style.

The characteristics of this substyle are big, intricate hairstyles, hair dyed to be light brown or dark blonde (darker hair is also common), long nails often with heavy deco, gyaru makeup with a very thick eyeliner on top and bottom and with thick lashes, dolly-style circle lens, colors such as black, pink and purple, lingere aspects (like as showing a fancy bra, having garter stockings, and corset lacing), tight clothing, (often very short dresses or skirts) and brand-name bags and jewelries.