After Traveling Through Time, He Was Abandoned at the Beginning and Was Replaced.

The hero and heroine meet, separate, meet again, and separate again, just because it is not cp. There is no golden finger. The heroine almost died when she just traveled through time. After all, she was a young lady, but no one claimed her. So is she an abandoned child? No memories, no family, no one to trust, no identity, no… How can she survive with nothing? How can an ordinary migrant worker grow up in a strange world, but there is still a cub to raise? Which of those people you meet is a good match?