Sehun hates kids. He always has, and he thinks he always will.

Chanyeol is his boss, married to the lovely Baekhyun, and the family has a son, Luhan. When the married couple decides that they want a vacation for their anniversary, they need a babysitter. 

After hearing Sehun say that taking care of a kid is easy, Chanyeol asks Sehun to babysit Luhan, to prove him wrong and to save some time setting up for the whole trip. 

Later when Sehun meets Luhan, he realizes that kids are not easy taken care of. Not only that but he's stuck with the kid for a whole month. 

But soon a month turns out to be way longer than planned. 

LINK: http://www.asianfanfics.com/story/view/808095/month-long-love-exo-luhan-sehun-hunhan