The Regressed Mercenary's Machinations

One of the seven strongest people on the continent, the King of Mercenaries. He started a war to avenge his fallen family and destroyed territory but failed and lost his life. However "Wow, I'm alive?" I returned to the past, back through time. A perfect opportunity to right my regrets and reverse everything. It doesn't matter if people around me point fingers, calling me a scoundrel, or dismiss me as tr*sh. Because "I've got a plan." "What plan?" "A plan to destroy everything." There won't be a second failure. This time, I'll wipe out all my enemies. But first, I need to rebuild this damn estate.