My sister's memory has a bulit in refresh button. Every half an hour, it refreshes automatically. However, the last thing that she forgot was not her name, not her birthday or her family. It was her celebrity crush, Lee Kikwang, also known as A.J.

Days before she forgot his name, she told me while lying on the hospital bed," I want to meet Kikwang Oppa at least once, oppa."

She has less than a year to live, and my job as her only family alive?

Fufil her wish.

Yang Yoseob is the only living family of Yang Yumi. Once a cheerful Kingka of CUBE high, he had everything. Loving parents, a kind-hearted sister, and a huge group of friends...

That was until her sister had gotten Alzheimer's disease, the cause is still unknown. Without any cure available, to only thing he could do is wait for her death.

Trying to fufil her last wish, and survive after their parent's deaths, the once cheerful Kingka had thought he lost it all. His only reason to survive was for his sister.

And he would do anything to make her happy. Anything