Review Detail of Xymn in The villainess shall be mine

This story’s world looked really interesting, but then the author decided to ’rush’ through it and made everything he was building for around 160~ chapters crumble as he put in a random ‘plot twist’ retconned his whole world he was building with a multiverse plot line rushed ending. The story before it was rushed ending, looked to be built up to be a large and long plot that was generally intriguing, but alas the author either got bored or just decided it was time to end it.