Review Detail of ItsLaiiiin in Playboy Cultivator in the Apocalypse

This novel does too much, and falling short of it's ambition would earn it a ~3.5 star from me. However, there's a character named Kiera who wins 10 stars for being the yandere queen. This lady insults everyone but the mc so much that she speaks her own language. Literally. She creates insults by chopping apart slang and slapping it onto analogy words for maximum social death. I'm not sure if she's ever repeated an insult despite using 20 new ones a chapter. She's super cute and endearing around the mc, and gets better by the chapter. I love her. For Kiera alone I give the author five stars.