A mix between agender girl and quoigender. It's a gender that feels like it isn't there and feminine in some way but one is unsure to which extent it is feminine and to which extent it is agender.
This might be because they don't entirely understand the concept of gender, because they're neurodivergent, gender apathetic, are confused, are gender non-conforming, dysphoriaflux, etc.
They can't tell whether they're agender or a girl, fluid between being a girl and agender, flux between being a girl and agender, a agender person who dresses and/or acts very femininely, a agender person who prefers to be perceived as a girl, a girl who dresses and/or acts very neutraly, etc.
They might identify with terms between agender and girl, such as gxrl, demigirl, agender feminine, agenderfae, agenderflux girl, xirl, etc. They might also refers to themselves as a binary woman or a agender person despite the fact that they're not sure what their gender identity exactly is.
The masculine conterpart to aquoigender girl is aquoigender boy.
History
Aquoigender girl, its symbol and its flag was been coined by Tumblr user themogaidragon on 14 September, 2021.[1]