Remember playing this a super long time ago. Is the main story actually finished now?
Sort-of, probably, technically?
Last I tried it, it was broken so badly you had to cheat to continue it. A recent bug fix listed in the changelog might have finally fixed that.
Specifically, you finally go back to the sex world. However, this wasn’t actually implemented, which means that the game just stopped there.
Even if it works now, the majority of artwork is missing for updates since ~v0.47. Likewise, despite being told to "explore the sex world" again, there was no actual content there and none of the changelogs since then mention adding any. Just a very bare-bones main story continuation with barely any images.
I skipped some dialogue, and the "ending" didn’t make any sense to me. It also just booted me back into the normal world afterward, so it didn’t seem like it made any difference to the world.