Typo on the page:
"Currently, this version (beta 0.85a) has 10 characters, 6 of which have NSFW scenes. All of those 5 characters have 4 unlockable scenes, for a total of 20 unique scenes."
If there's 6 characters with NSFW scenes and 4 scenes each, there would be a total of 24; if there's only 5, the first section should be changed to match.