Transmigrating Into a Book With My Best Friend to Win Over the Emperor and the Beauty

Looking for a Novel About Past and Present Lives

I’m looking for a novel where the leads lived in ancient times in their previous lives. The second male lead caused the male lead’s death, so it ended badly. In their second life, the story is set in a more recent era. The male lead finds the child he and the female lead had in their previous lives in a river near the village, then secretly takes the child home to raise.