Oh get the fuck out of here with the rapist ghost. What the fuck is this? And why the fuck do they make her get turned on by this bullshit. Fuck off, eww.
This is not that type of manga. It's about Lucky Pervert, not Sexual Violence.
Maybe I'm just bad at picking what I read but rapey ghosts feel like one of the rarer things in sexy mangas. In that sense the author is doing a pretty good job of thinking outside the box.
And I'm guessing this island's curse is the soul of some super horny teenager boy who died before getting to touch boobs so his massive regrets of never getting to touch boobs turned him into an evil spirit.