Erasgender is a xenogender in which the person feels like their gender has been "erased" and there is only a small trace of gender left, but the rest has been "erased" by an agender identity. Someone who is erasgender is mostly agender, but with a light trace of another gender and feels like the light gender was once their dominant gender. This term was coined in November of 2020 by an anonymous wiki user and was made with neurodivergent people in mind, but is not exclusive.
The alternative terms are erasboy and erasgirl, in which their "erased" gender is male or female, respectively.
Flag
The colors on the erasgender flag are purposefully very faint, to symbolize the "trace" that is often left behind when erasing things on paper, except for the black which is to symbolize the agender "void" that the person now feels.
For the alternative flag, the green represents gender, the white represents the gender identity as it once was, the dark core representing the neurodivergence or trauma, the lines represent the vanishing of the gender, and the black represents absence.
Resources