After Becoming the Top Villain, I Became Everyone's Favorite

[Blurb] As a powerful great demon with countless underlings and tributes pouring in year after year, Mu Shuo'an has always lived a comfortable life, apart from one old rival who refuses to die on the neighboring mountain. Recently, however, he heard that his rival didn't have long to live, and Mu Shuo'an was overjoyed. He prepared firecrackers and a funeral wreath in advance, ready to go feast at the funeral, but never expected calamity to fall from the sky! Mu Shuo'an discovered that he was merely a cannon-fodder side character in a danmei novel. He spends the whole story making stupid schemes from the sidelines, constantly stirring up conflicts between humans, demons, and monsters in hopes of profiting from the chaos. But his methods are so foolish that in the end, the vicious and bloodthirsty villainous big boss runs him through the heart with a single sword. And that big boss is none other than the person Mu Shuo'an was planning to feast at the funeral of: Qin Shu. Mu Shuo'an: ...I hope he's okay. To save his own life, Mu Shuo'an decides to pay his dying rival one last visit, only to discover that the other has regressed into a young demon. Just as Mu Shuo'an thinks fate has decided things and prepares to strike, the little demon swings his tail and throws himself into Mu Shuo'an's arms. "Big brother, you came to find me!" Mu Shuo'an: ? * To prove that he's the villain who most deserves to be the bad guy, Mu Shuo'an decides to take Qin Shu's path and leave Qin Shu with no way forward. But after making his way through the worlds of humans, demons, and monsters, everyone starts looking at him strangely... The Demon King, who rules over half the monster realm: "I am willing to bow to you." The undefeated God of War, decorated with countless military victories in the demon realm: "As long as you're here, demons and monsters will never wage war or invade one another." The decisive director of the Monster Control Bureau, who hates monsters more than anyone in the human realm: "My position will always be waiting for you." Having quietly accomplished great things, Mu Shuo'an turns away without a trace of reluctance. "I'm going home to raise a kid." * Everyone knows that the big shot Mu Shuo'an has a little demon by his side with pitifully weak magic, one who trembles at the sight of people and can't help with anything but causing trouble. Countless people want to kill him and take his place. But when someone really does kidnap the little demon, the sharp tip of his tail presses against their throat, and he sneers. "I'm all he needs. If you come any closer, I'll eat you. Demons love eating monsters raw." Of course, he also really wants to eat the person he's been calling big brother all this time. Just in a different way. A refined, scheming pursuer x a fiery-tempered, beautiful recipient with incredible strength Reader's guide: -[One-on-one] -[Will add more when I think of it] Theme: Even cannon fodder can have great ambitions