Every second of your life is important because after a day of memories you have to restart all over again.

That's the rule of your life for 13 years and you had accepted it....

The only person you remember is Him....every memory of him is still in your mind...just him and no one else....

He is your diary that tells you who you are and what you are everyday....

But everything suddenly changes when you got into an accident that when you woke up the person that you can only remember is the person that you first saw when you woke up....

Kim Hanbin is the person you only remember after your accident 13 years ago that cause you your rare situation...After 24 hours all Your memory from that day vanish leaving you just his memories alone that's why he is always there for you to guide you and protect you until one day you got into an accident that changes everything that when you woke up the only thing that you remember is the person who save you from the accident and other memories vanish even hanbin is just  No one to you....