Review Detail of SusanMum in I'm the Villainess in the Apocalypse

Hi Author good day to u.. wanna check if this is original story or a translation.. roughly how many chapters for this novel.. mind to spill some spoilers.. Will the FL Anna have a happy ending.. her other half will it be Dylan or surprisingly Mark.. really like this story and looking forward to it.. Hopefully there will be a reply.. tqvm.. gambateh.. ps.. voting is less than 70 chapters.