anjeeriku
This is a bit similar to another novel that I read before. Though that one was very short, about 10 chapters I guess. Both FLs were older than the MLs. The FL died and accompanied the ML til his death. The ML never married in his lifetime and devoted to the FL. Even living in her mansion, singing a birthday song for her every year, hugging her picture to sleep, and others. The only difference was that in the other novel, they were step-siblings and the FL seemed to hate the ML very much.