quick-change dance (kabuki)
A kabuki dance where the performer changes costume seven times in quick succession. Compare 七変化 (しちへんげ).
See also: 七変化
In kabuki, the 七化け is a highlight where the actor changes costume seven times on stage.
seven disguises of a ninja
Refers to the legendary ability of ninja to adopt seven different disguises (e.g., merchant, monk, samurai). Often encountered in historical or fictional contexts.
It is said that ninja infiltrated enemy territory using the art of the seven disguises.