Title: All Over Again
Author: livingfantasies
Genre: drama, fluff, romance
Length: 35 chapters 
Characters: Sehun, OCs
Status: Completed 

Summary: "Jung Sora is a 25 years old single mother. She has been struggling to raise her son, Hyunsoo, all alone for the past five years. Due to circumstances, she has also been hiding the father's identity. She is the one and only person who knows that the man who got her pregnant is none other than EXO's Oh Sehun."

Why I like it:
This story is nicely written and the plot is pretty refreshing (at that time when I first found out this story) 
Aaaaaand, who doesn't love daddy!sehun ????? (grins)