Since the first time Myung Soo laid eyes on Hyo Woo in First Grade, he couldn't help but like her. 
He and made fun of her but in the end they would make up.
She was his first crush, first kiss, and first love. 
He treasured her so much and she became his everything.

Like Myung Soo, Hyo Woo liked Myung Soo from the first time she saw him.
She always looked up to Myung Soo and depended on him.
If there was anyone that can cheer her up or make her laugh, it was Myung Soo.
And because of that she loved him so much and he became her everything.

But what if Myung Soo falls ill? The illness he thought he already recovered from when he was younger. The illness that no one knew besides his parents. The secret illness that he didn't dare tell to his group of best friends and even his beloved Hyo Woo, so they didn't have to worry about him. The illness he thought that was buried in the past... What if it came back? And it got worse. Will Myung Soo and Hyo Woo stay together? Or will they have to part forever?

"Despite my condition, I was fortunate..
Because I had you."