It is based off an old Cantonese song with the same title by Fiona Sit which carries similar themes of unrequited devotion and faith where a fan writes letter to Keanu Reeves for years without fail, expecting nothing back only to recieve a handwritten reply in admiration for their persistence and love. If you read books, you should really give the original novel a go :3
I need this answer .. i already know this danmei being told by everyone and still wondering why. And it gives highlight about “hopeless romance but with unexpected ending” .. i think i will start the novel first
What does Keanu Reeves gotta do with this