I used to find futanari really off-putting, but vanilla stuff like this really gave me an appreciation for it. I think the most succinct way to put it is "yuri, but one of the girls just happens to have a dick."
It’s like fantasy trans lesbians but not really... well this story is actually pretty much 1:1 with regular trans lesbians.
if it was on me i would probably tag it on the transgender tag. You can see clearly in one of the pages that it isnt "futa" in the sense of having both things.
maybe what could be considered the most futanari thing is the cum, but some trans girls can tweak with their hormones to be able to still do it, so no big deal
it would be nice to have things like that outside of the futa tag so we could find it without having to dig deep to find it. I used to search a lot for it in the hopes of finding something that could make me feel more representated but its always so deep burried under the ones with hyper exhagerated proportions that I ended up just giving up, but from time to time I end up stubling upon some rare ones like this