I feel like for Yandere stories in general, anything can happen. You might happen upon stories like that, where Y/N will stay willingly for one reason or another, but in others, they might actually end up dying, tortured, imprisoned, etc. It all depends on the sort of character the Yandere is and their level of obsession. So, it’s not impossible to find a story where they get together in the end, but I feel like majority I’ve seen lean towards the harsher side of things.