The Villain Has Reincarnated To Commit One Last Sin

I committed many evils and caused suffering to many people. I turned my back on the Empire I swore to protect with my life. I murdered children to gain recognition for evil. I forcibly raped women. And... I slaughtered my entire family just to get power. When I accomplished my task of defeating the Demon King, I ended up in a near-death state. I laughed at the situation I found myself in. However, I did not despair... Before losing what little vitality I had left, I managed to successfully contaminate the 'Hero's Inheritance'. And along with it, the darkness finally consumed me. But, I didn't die, but I went back to the past. [The 'The Essence of False Sin' System has been unlocked!] Due to the bad deeds I did in my previous life, I was given a new power. With this new life and the 'System' given to me, I will do my best to defeat the Demon King again. But... A big obstacle will appear in my way... ----------- The cover drawing does not belong to me. I'm using it for the moment until I finish drawing my cover...