RYAN PEREZ  as Do Ji Han 

A young man who doesn't care for love and just focusing on work as a doctor. He was left by his parents and he is the only child. He knows how lonely he was. He is always alone at home and he doesn't care about the world but everything changed when he met this beautiful lady who made his heart complete. 

He don't lose hope on finding this lady because he believe that this lady will make her life happy and he will do everything for her.

Jessica Perez as Seohyun

A young lady who loves camping and loves to see the beauty of nature but she can't do that anymore when her lung cancer began to get worse. She started to lose hope and it's fine to her to just die because no one is there for her but everything changed when she met this handsome man who made her night complete. 

She didn't want to fall in love because she know she will end dying and hurt him but the man didn't lose hope and she was thankful when this man stay beside her no matter what.

Now, they are ready to face new challenges and problems in life because they believe that they will fight up to the end.