Tetogender, also known as KasaneTetogenderor TetoKasanegender, is a xenogender under the UTAUloidgender umbrella related to the UTAUloid Kasane Teto in some way. This gender may or may not be capitalized as Kasane Teto's name, and can also be written as 重音テトgender or テトgender. This may refer to a gender which changes when listening to music featuring Kasane Teto, a gender which feels validated by Kasane Teto, or something similar. This gender may also be synonymous with chimeragender, and can also be an ambiguous, feminine-aligned, or woman-aligned gender, based on Kasane Teto's canon gender. It may also be used by individuals who feel that Kasane Teto is the embodiment of one's gender, or who experience gender envy from Kasane Teto. It may also be a kingender for Tetokin individuals.

These are simply a few possible explanations of the identity; any gender related to Kasane Teto can be considered Tetogender.