Transfem Demiboy is a term for when someone identifies as both transfeminine and a demiboy.
Transfeminine is an umbrella term for any trans person whose gender is feminine and/or who express themselves in a feminine way, and demiboy is someone who only partially but not wholly identifies as a boy or man. A Transfeminine Demiboy could be a demiboy who prefers to have a feminine presentation, or whose other gender is feminine/female.
History
This Flag was created and uploaded by Tumblr user Mogai-Place on April 25, 2022 after an anonymous user requested it. It was uploaded along side Transmasc Demigirl.[1]