Reminiscing About First Love

The male protagonist rises from obscurity to wealth very quickly. He feels lonely and empty late at night after the feasting and feasting. There is no shortage of women around him, but he always loves to reminisce about the past, the woman he has been with for 5 years! Finally, I made up my mind to find my first love, overcame all the difficulties, and used various means to rekindle the old love, but I still couldn't sleep...