It's a Good Simulation, but Why Are They All Big Sisters?

At the beginning, I traveled through a desolate proton, and luckily got the rare treasure [Book of Destiny]. Different lives can be simulated and rewards can be obtained by completing tasks. In my first life, I saved a homeless girl and helped her grow into a true immortal in the world, but she sat there for a hundred years, just waiting for my return in the world of mortals. In the second life, I transformed into a national master of a country and taught a concubine to become an unprecedented empress, but she said she would never let me go in her lifetime. ... One day, I will be free again. As a result, several mature older sisters who seemed to have been seen somewhere suddenly appeared around me. "Husband, I miss you so much that I have become plump..." Didn't you say you want to experience life? Why did you all come true? This book is also called: "How did the girl I raised become a mature woman"