Really enjoy the "no stigma in this world" concept. Just because things are determined to be bad in our world doesn't mean anything in regards to another world.
Had the same problem. Deleting the files to ensure no old data still existed seemed to work. Not sure you can keep your saves doing that, but that's beta-builds for you.
Try clicking on the male/female icon at the top while choosing interactions, see if that enables anything. Otherwise, make sure that one of the characters has a vagina.
In the eastern surface wilds (I think it's east, opposite Neko's home), there's a little makeshift shelter that eventually has a big gorilla in it. Advance quests until he's there, then talk to the nearby soldiers for a quest involving him. Use the rewarded relic to enter the rat's nest next to him, and you'll find the key to Futa content in there.
Other than first getting it, the only scene I've seen with it is in First Stratum, where a dwarven housewife in the Inn wants some help.
It seems to be less of the game and more that Neneko's speed just slows down to a crawl. Try saving/loading, jumping, attacking, just doing a variety of things to reset it, it worked for me--though if your case is actual slow frames, it likely won't for you.
Any way to get the Kirin Horn if you killed it before getting Kaere's quest? The corpse is still there, but I can't seem to interact.
Edit: Somehow, after speaking to Anemone in her shop, Kaere finally spawned inside the shrine. Don't know if there was an issue with flags not being coded early enough, or if a bug stopped the flag from triggering before or something.
Doesn't work for facesitting positions? I know there's currently no purely lesbian poses, but a few are available if you genderswap Null and still have sex with the NPCs.
As a male, female, or futa, with a "Normal" (quotes because it's still big) dick or none at all, Null's boxers prevent the crotch from being visible outside of kissing high heat characters or sex. You can use a Magic Mushroom for a giant dick which is always out.
She mentions that based on what her mistress always fed her with, she doesn't have a favorite food, but enjoys anything (there's no +0, just +1 for everything).
Hit a tnt while on Overdrive at the end of the level, managed to stop hitting the TNT in time to break the end, but died and got shoot-em-up at the same time, resulting in a crash.
This really doesn't say much to me but hopefully it'll help the devs solve it.
Ravaryn Outskirts, once you reach the star on the map.