It would be cool and all if the bro was getting shot and she protects him. That would be more fitting for her death. Also the writing was too stupid making the lil bro go out and all knowing people are armed with guns and shi.
I never felt sad in any point in the drama. If the writer was gonna kill her off he could have done it in a better way. The way she died was just boring and lame.
Basically the mcs dont end up with each other since the fmc goes back to becomming an idol, even tho they still have the same feelings for each other that they had whilst dating. Also the mc ends up with one of the supporting character without much development, which was clearly forced by the writer.