Everyone wants immortality and boundless power, but what happens when they actually get it? What else is left around them except boundless darkness and endless loneliness?
"Is it worth it? You are a majestic demon king who gets whatever you want. Is it worth sacrificing your life for a woman?"
"Worth it"
(The author of this article has an uncertain writing time, so you can wait for a while and read it when you grow up)