So, the other day I was browsing through pixiv and happened to stumble upon a couple of pictures unrelated to each other but happened to be next to each other: one featured bukkake and another featured burning alive. And that combination gave me an idea. You know that setting where it's some remote village which has weird ancient customs which might happen to include group sex or human sacrifice? So, the idea that came to my head is to have both. Namely, a little girl with pure heart is elected/volunteers and the men of the village have lots of sex with her, by which they dispose their impurity/sin/whatever you want to call it onto her. Bukkake is included for better visual appeal of the ceremony / to give more obvious visual representation of the sin being transferred to the girl. And then the girl gets burned alive together with all the sin she accumulated, thus leaving no sin behind in the village. Well, you get the idea.

Of course, the version in my head includes everything happening consensually and even casually. Maybe they, including the girl to be burned, don't even actually believe all that supernatural stuff, but just consider it to be a fun and beautiful tradition from the past, a merry festival with no reason not to do it. But since this thread is for other people to pick up the ideas dumped here, feel free to make a more non-consensual or maybe even horror-like version if you think that would better fit the setting or it's just more of your thing.

P.S. A girl with most pure heart is required because that makes her an empty vessel able to storage all the sin, or something like that... perhaps, especially in the consensual scenario, it also makes able to resist / not succumb to the sin immediately, so she herself is still pure when she's burned and thus gets to go to heaven... but she still has to be burned before that sin gets to her eventually... makes sense?