Looking for story of siblings on vacation who end up in a threesome with a succubus on the altar in a church

[noboruhigashi]

I'm looking for a story on a brother and sister who go on a backpacking vacation and end up meeting a very attractive foreign lady. They end up travelling together or something and the sister ends up having sex with the foreign lady in a hostel. Then towards the end of the story it starts raining and they take shelter in the church. In the church, the foreign lady transforms into a succubus and seduces the brother to have sex with her and the sister. I can't find it on Literotica anymore. Would appreciate any help!