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Gainax bounce (trope) main image
Gainax Bounce
Aliases Gainaxing
Jiggle Physics
Related Pages
Tropes Bathing Scene
Breast Envy
Breast Expansion
Convenient Censorship
Fan Service
Modesty Towel
Panty Shot
Skinship Grope
Thanks for the Mammary
Locations Beach
Hot Spring
Public Bath
Swimming Pool
Gainax Bounce is a trope. It refers to breasts bouncing around gratuitously, often in ways that seem to defy physics.

Overview

While it has been used by numerous animation studios, the Gainax Bounce was popularized by the wider spread of various anime created by the GAINAX Studio. "Gainax Bouncing" or simply "Gainaxing" is usually used to refer to especially exaggerated bouncing of big boobs, and some would argue that true Gainaxing involves each breast bouncing individually.

Anime & Manga

Eiken gainax bounce

An extreme example from Eiken.

Bouncing breasts have become a common sight in modern anime, to the point where many people automatically associate it with anime in general without a second thought. Generally, the use of this concept is found in anime that is targeted at teen or adult male audiences. The more dramatic the movement, the more dramatic the bouncing becomes. The human eye is naturally drawn to movement and this is used to draw the attention of the audience, though often for a comedic effect. Bouncing breasts is one of the most common forms of fan service, right alongside the Panty Shot.

A female character may make a rather subtle movement and her breasts will suddenly shake, jiggle or bounce--sometimes realistically--but more often than not in a somewhat exaggerated fashion. The amount of bouncing ranges from being subtle to being dangerous to anyone in close vicinity of the breasts. Gainax Bouncing is usually present in shows with heavy fan service, or fan service-themed episodes or scenes (such as those taking place at a beach or hot springs). Bras (and clothing in general) usually appear to have no effect in stopping a pair of bouncing breasts.

Bouncing breasts are also depicted in manga but obviously don't come across to the reader quite as effectively.

Notable Examples

  • In Gurren Lagann, a GAINAX anime, Yoko Littner's breasts bounce a lot, somehow staying in her small bikini top. In some cases they seem to bounce without any movement from her body at all, requiring nothing more than a glance from a male character.
  • The numerous buxom girls of Highschool of the Dead have extremely bouncy breasts. In one scene Saiko Busujima's breasts actually dodge bullets in slow motion.

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