So okay... i discovered how to become a futa (in the game, to clarify)
Turns out that there's only 1 futa scene in the whole game (maybe), which can be accessed via recollection room.
More than that, to actually become a futa you need:
1) Find a trapped chest on the 2nd floor of the dungeon (i dunno if they're all trapped or just some of them, but it HAS to be pickable)
2) FAIL at picking the lock.
3) Win the rng, because there are like 10 different traps you can trigger.
4) ???
5) Why did you do all this there's only one scene. (maybe you also get interractions with mobs, haven't tested it)
or
1) use a debug scroll (cheat it) and go right.
It's also how you get one of the two variants of stuck in wall scene, because that trap can also trigger a teleport trap which teleports you into a wall (but you dont get fucked).