for "abandoned empress", it was a god who made a mistake bringing the black-haired bitch to that world but still had that mistake happened in the new timeline?? whatever （￣へ￣）
for "the villainess reverses the hourglass", there was actually a good reason why Aria was able to go back into the past. Not gonna say it though, that's spoilers (⌒▽⌒)
for the other stories, it depends on the plot. It could for some bullshit reason like "abandoned empress" or a solid reason like "the villainess reverses the hourglass". Idk though why Elaina was able to go back in this story
In abandoned empress Tia was choosen as the substitue of the child of the god by the God, so until god s real child can appear, there will be another to help the kingdom, basicly a shitty god decided that Tia will be a chesspiece disposed of at the time the real child of god appears. I was so frustrated with that god, that it was not enough that they messed up the soul transfering to Tias world, but also linked Tia and the prince together to be fake destined partners only to leave Tia hurting at the end of the story. It was cruel, and the start of everything bad happening to Tia is cos of God s mistake. (╬￣皿￣)
I still wonder though, about all the female protagonists regressing, like her. I wonder if they’ve realised or even thought about how they didn’t return to the past but instead, went to another world line. How their dead loved ones(from the past) will remain dead and the ones they’re trying to protecting after regressing, are merely another “elena’s“ loved ones in another world line. This is prob just me being overly dramatic tho tbh