Yamiflux

Yamiflux is a neurogender that is for those who experience depression or depressive episodes. It is only felt during the sadder or darker moments of depression.

The opposite of yamiflux is hikariflux.

Etymology
The word "yami" (actually 闇) is a Japanese word for darkness.

History
The term was coined on June 22nd, 2021 by FANDOM user WasabiBuns.