Her life changes when she met him. Kuroko Tetsuya, a teacher of 'Baekguri Kindergarten'. The blue-haired man opens a new page of Seohyun's life. Same thing happened   with Kuroko himself.  Little did they know  they have found their missing piece of life. And as the first snow falls, love began to grew between them..

déjà vu (n.) a feeling of having already experienced the present situation.

Mingming's only way to see Junhong was to do video calls. But, video calls are not enough.

"Promise me one thing, Uppie."   "What is it, hyungie?"   "Don't stop smiling."

There are four seasons - winter, spring, summer and fall. Myunsoo was winter, cold and unforgiving and she was summer, carefree and shining. What happens if they switch places? What happens if winter is tired of the snow and wants to feel the warm sand beneath his feet? What can summer do, when winter has built an ice wall around her, trapping her forever in the cold?