An Absence of Eternity

A girl who has recently gone to a new school as a transfer student meets a charming boy that can steal her heart. However, she had a best friend that moved away to Singapore for more than seven years and she hasn't heard from him since. What she doesn't know is that he has been suffering from lung cancer since he was young. Will he be able to stay with her until his very last breath or will she choose the new boy she met at school?