How Should I Survive in a Different World After Being Reincarnated as a Villain?

["[Holographic] NPC's retirement life" new article seeking collection] Bella is a reincarnated person who is born with knowledge. He has a prosperous and happy family, does not worry about the world, hides the fact that he is a reincarnation, and is a winner in life except for his "sick and weak" body. She is the so-called young lady who only wants to spend time reading books. There is nothing bad. Miss Bella, who "owns everything" and "has been everywhere", has no great ambition to rule the world or become the strongest in the world. Unless her family goes bankrupt or the empire is destroyed, nothing can stop her from continuing her retirement life. However, just after her eighteenth birthday party, she suddenly saw a very strange name on the list of newly recruited servants. Bloodthirsty God of War. Bella:...? Miss Bella fell into deep thought while looking at the red-haired man chopping firewood in her backyard. He is handsome, but with such a name, how did he live to be so old? ===== [The second half of the text contains a lot of spoilers and was revised on September 6th] [This article will be published on v on September 4th, and will be updated on the same day. Thank you to the little fairy who has always supported me! [Demining, the female protagonist is the male protagonist's number one love dog, and she is also a love brain, don't enter if you don't like it] After my fiancé broke off the engagement in public, I recalled the memories of my previous life. Oh, it turns out I am the villainous lady. Wait, did I do something bad? I am so confused, but now my ex-fiancé has stripped me of my noble title and expelled me from the country. Looking at the endless plains in front of me and the bottomless forest behind me, I let out a long sigh as I was penniless. Survival... Shouldn't be difficult, right? ====== However, just after I decided to learn to be an ordinary person, I was traveling in a big city with my new companions and my long-lost teacher, when I suddenly heard such a rumor. Legend has it that a brave man from another world appeared in Belesra, the country that drove me out. More importantly, that brave man is probably someone I know. They were about to embark on a journey to defeat the Demon King, and I, who also came from another world, was also confused. Just then, I discovered a secret. A secret that concerns my life and has been hidden for eighteen years. Reading instructions: This article is inspired by various Japanese light novels and lightly adapted comics. I like this genre so much, but the updates I am following are either too slow or I can't chew raw meat. I have no choice but to cut my own thigh meat. PS: The story of villains retiring from marriage is a very common routine among Japanese youths. This is not plagiarism. Please forgive me for the difficulty in writing. Conception: