Geminogender is a gender that is usually coupled with a double of the same gender. To put it simply, geminogender is when you feel twice the same gender. People who use the term geminogender may refer themselves as male², female² or similar. They may use pronouns that are just normal pronouns with an additional "²" a the end.
Flag
The flag was originally created by a Discord user named "☀Savok", it was then popularized and shared on multiple Discord servers and a french LGBTQ+ Amino.
The stripes being copied twice represent feeling the same but twice.