Title: Thug Wife
Pairing: Luhan/OC  (Sena)
Rating: [M]
Genre: romance, , gangs
Length: 71 chapters + epilogue
Status: Completed
Author: exoism

[the author's description]  Jeong Sena is the daughter of a CEO of one of the biggest steel companies in Asia. After drinking a little too much one night, she wakes up next to Luhan, the son of a CEO of China’s largest weapon and explosive manufacturing company. For the sake of public image, they are forced to marry. Sena soon finds out that Luhan has many deadly secrets.

This is one of the longest story I've read here on AFF, in terms of chapters, 72!!! 
I can't really say much about it. I mean, it's a story that involves an arranged marriage and gangs, with quite a lot of ups and downs. And expect some y moments between the main characters, because with a teaser and y gang boss like Luhan, it's inevitable.
I liked the combination of romance and action in the story, the comedy too, sometimes provided by the other EXO members.
Stories about gangs are pretty common but this is the one I enjoyed the most so far, and as far I as I remember.

Here's the link ❤