Question on Vast Cold's gender?

I'm aware that gender doesn't matter once you become a True Immortal. But I'm kinda curious to know their gender.

Listening to the words of the prophet from Vast Cold's homeland, as described from Vast Cold's own mouth, made Do Gon reflect deeply.

And at some point, they came to fall for Vast Cold.

Not as the opposite gender, nor as the same gender—but Do Gon fell for their character, and the enlightenment they possessed.

I think [Vast Cold] might be some kind of theologian? And he/she might be a Zen monk. Since they always appear with some kind of cherry blossoms everytime they meet the protagonists.

I'm not sure about their gender, but I believe, Vast Cold's character was leaning more on to the feminine aspect. What do you guys think?