At this point, I'm just going to call Strive Testament(keyword here is Strive) female.
This isn't Non-Binary nor is this Androgynous, this is a plain female with no tits.
Even without the mods, apparently the Panties are NOT added in(Yes, they have those panties in their base model) and they have female tier hips with constant leg showing that looks very female. The face is equally female and even the way they pose is more female than not.
I'm doing this for the sake of my own sanity because I'm seriously tired of seeing people try and pretend "this is always what Testament is" and I'm like "Whose fucking artwork have you seen?".
So there you go, that's my stance on it.