I read it earlier this morning but my previous phone screen broke before I could save it on NU. The MC is introduced when he's 9 years old. He's transmigated into an (otome?) game as a villain. His own stepsister is set to kill him in the future so he's super nice to her. He's got a 'home saving' system where he can earn affection points and buy weird things. The first thing he buys is 6 skeletons who are professional coffin dancers. The MC uses these skeletons to grind flour as he goes around collecting taxes. I think all this happened in the first 15 chapters.
It's a Chinese novel "little tyrent doesn't want to meet with a bad end "? The six dancing skeletons with the coffin and how he used them to grind wheat If you like it try "My Death Flags Show No Sign of Ending" Or " The Girl Who Ate a Death God" Or " Evil like duke household " Or "Tilea's worries "