The male lead is a single dad. Either his wife died or she cheated on him and left. The female lead falls for him in the end. Second male lead tries to keep her away from him because he doesn't think she should be with someone who's got a child or something.

  • One more happy ending
  • Second to last love
  • Zenkai Girl
  • My little baby ( he adopts his niece)
  • My Geum Bi ( he adopts his exes daughter)
  • 5 is Enough 

Check out:

  • Prime Minister and I - wife died and leads get into contract marriage: ahjusshi romance
  • spring days of my life - wife died; ahjusshi romance
  • Single dad in love - i forgot the ending but i think this had a very sad ending
  • My healing Love - he and his kid is abandoned by wife, main romance starts very very late into the story
  • A love to last (Philippines) - wife abandoned him and the kids; ahjusshi romance
  • Oh My Lady - ML belatedly learns he has a kid when daughter is dropped in his doorstep; noona romance
  • Down with love (Taiwan) - ML gets custody of his brothers children
  • Cheer Up mr.Kim - ML becomes foster father (one is his niece some are like abandoned children) who loves all those kids and will do anything for them. Very long drama.