Cassexual is an identity where one feels that one is indifferent to the idea of sexuality, and believes it is not an important part of their identity. A cassexual individual may be asexual, but does not have to be.
History
This term was coined on September 28, 2014 by tumblr user okaygender via mogai-archive.[1]
Flag
The flag was coined by Tumblr user pride-color-schemes on June 27, 2016. [2] The colors of the flag are muted to represent apathy. They do not have a known individual meaning.
Sources
https://pride-color-schemes.tumblr.com/post/146536965453/cass