The story started off amazing, the male lead's character was to die for, the female lead has a charming and bubbly mentality that makes people hearts smile. The story was well written in a way which would heal the views hearts and make our hearts flutter
but the last two episodes messed up the whole story, the writing and ending felt forced as if the writer changed it for the viewers to get a happy ending with no back story (spoilers ahead)

jun (our male lead) is suddenly diganosed with blood cancer in episode 14 and he doesnt tell the female lead or his friends. In episode 16 his own mother comes dressed in black and tells that he's not longer with us to the female lead

everyone starts crying when they hear this news, his friends and duh us the viewers but the last 5 minutes of the drama jun is somehow alive and comes to visit the female lead, he says he wanted to get full treatment, and rara (female lead) somehow accepts that

question 1 )If jun didn't want rara to suffer did he think that making her think that he's dead would make her happy?

question 2) the blood cancer plot felt like it was written last minutes with no clues at all in the beginning

question 3 )how could his own mother support the claim that he was dead

at least make another 2 episodes to somehow make since and give us a backstory.
The story had so much potential, towards the end it became a children's drama play.
the writer should have stuck to the initial idea of healing and light heartedness.