Secret letter

It's about a letter from a unknown sender who The actor Miya try to find every one don't know about the letter except her best friend Sakura she will try to help her to find the sender and taking pictures she will find some annoying things and hard things in her way but she will keep trying and trying and she will takes a lot of time but without giving up until she knows what is the secret letter mean she will get more letters from the same sender which make her scare and worry if it was a dangerous killer and she will meet a guy that he will help her also she will find out that he is from a rich family she will fall in love with him but the unknown sender keep watching her and will try to make her his own love even if that mean to kill that rich guy