The Regressed Demon Lord Is Kind summary: "Demon King Zich Moore, become someone who does good in your next life!" The hero shouted to the Demon King of Strength, Zich, as the Demon King met his demise. When he opened his eyes again, he found himself back as Zich Steelwill, before he became the demon king. He had no desire to become the successor or the Demon King in this life. Then what? Yeah! Maybe I’ll do "good" like that hero said! But how do you do that? The former Demon King of Strength was unfamiliar with the concept of "kindness."