The Billionaire's Forgotten Wife - Chapter 18: Why Now, Zeke ?

In a world fractured by conflict and haunted by shadows of the past, Kokushibo—the first Upper Moon demon—meets his end, only to awaken in a new life. Reincarnated as Crimson, a child born into a different family, he carries the memories of a past he cannot escape. Burdened by centuries of guilt yet indifferent to the present, he resigns himself to duty—until an unexpected bond with his newfound family begins to thaw his hardened heart. As he struggles between the weight of his past and the weight of the new life, Crimson must decide whether he will remain shackled to his former sins or embrace the possibility of peace.

Yo, Hi! I’m Frank, I made a deal with a demon to pay me some money for receiving a guest for a few days every week.
I had no idea about what I have done.
On May 1st, Conan ‘the God of Death’ came to my house. I was forced to let him in and we get involved in a criminal case.
On May 8th, Bruce Wayne ‘Batman’ came to me. I was forced to follow him to fight crime.
On May 16th, Hannibal Lecter, The Silence of the Lambs, came to my home. I can only say that I really can’t stand my guests.

- Description from Novelupdates

Five years ago, she was the biggest joke in Haishi! Seven months into her pregnancy, she discovered that the man from their passionate night was not her husband-to-be.The man she deeply loved was already having an affair with her sister...Five years later, she returned for revenge with her adorable genius child.To her surprise, the father of the child turned out to be the most powerful man!From then on, she became the most envied woman in the world!Tycoon Qi declared arrogantly: “You hired me for a hundred thousand, now I'm yours for life!”Princess Tian Tian clung to her leg: “Mommy, you've avoided me for five years, but you're finally back to take responsibility!”Prince Momo showers his mom with affection: “Mommy, here's my bank card, spend it as you like”Genius Yuan Bao complained pitifully: “Beauty Ling, you're not favoring only me anymore!”

The story is centred around a cute android who initially had a happy life with her master who dearly loved her. But she was then struck by a series of misfortunes and ended up in a robot-equivalent of concentration camp. Through experiencing and witnessing the sufferings towards herself as well as the people/robots around her, she eventually gained a better appreciation of life.