Lesbian or girl/girl content then? These are not synonymous, I hope you realise. Or perhaps not if you think a story of a man who dies in a car accident and wakes up in a body of a bitchy, sex-addicted woman is somehow lesbian in nature or could have been conceived by a lesbian author.
They might not be synonymous, but the distinction could essentially be boiled down to "is the sex between two women based on a romantic relationship?" In which case, you might as well go further on the hair-splitting and say a lot of porn of
any orientation isn't "actually that orientation."
Oh, sorry, that porn you like isn't straight because it's not romantic enough. It's just male/female intercourse.
Or is your distinction purely based on who made it?
Also, NBNL was lesbian enough for an actual lesbian to be interested in the game (and the original version before the rework) so... sure, it's "lesbian in nature." The dev could be a straight dude, bi woman, pansexual enby, again, I don't know, but who gives a shit as long as the content's good.
Even though this thread has the "lesbian" tag, when I tried the demo version there was no lesbian content either in-game or in the game files that I could find. The "lesbian" tag comes from the creator's intent, who plans to have a full "lesbian" path in the game alongside other paths. We don't have enough information to answer your question.
Hypothetically speaking... Tentacle3g is working on this game, and their last game was Sword Maiden of the Azure Dragon, which so far is pretty similar to this one. Sword Maiden's main character was bisexual, had lesbian lovers, and indeed it was part of the game to sex up your female companion to power up their stats. One of the endings is the main character having her own lesbian harem. Since you can (so far) avoid tentacle rape and the like, I can easily imagine an exclusively lesbian path. But if the content is similar, expect magical dildos and potions of futanari to play a big role.
Thanks for the straight (heh) answer to my question. Magi-dildos and dickgirls are fine by me so I'll just have to keep an eye out for the game to be in a more finished state then.