Mushigender is a gender that is influenced by whether or not one feels as if they have received enough attention from the people they love. When one feels rejected one leans more towards agender, gendervoid, or similar.
It was coined on September 6th 2020 by Discord user Entrapta||Shade.
The mushigender flag was created on November 20th 2020 by fandom user doctorsherlockstrange. It has seven stripes, each a shade of pink, getting progressively darker until the bottom stripe, which is black. The pink represents love and the black represents void/agenderness, while the fade represents the gender changing.