Please recommend me modern dramas/movies like Ha Ji Won's Daddy Long Legs

Hello,

Please recommend me modern dramas/movies like Daddy Long Legs (2005).

It could be FL or ML who's too busy with her/his life to realize someone harbor a feeling towards them. And that someone is kind to them, protect them secretly, giving them money secretly/openly, or anything similar for like years or decades.

They could be friends, neighbors, schoolmates, distant cousins, or complete strangers.

Age gap is okay, older woman is okay, same age is the best.

Bad ending is okay, happy ending is better, ambiguous ending is acceptable.

Thank you in advance.

 emeraldarrows:

Kill Lover ML has been secretly aiding the FL for years since she saved his life when they were children but due to his fake persona, FL views him as her enemy. Happy ending. :)