Well... what are the genres that you read? Coz as a reader/ writer.. I breatheeeeee angst and tragedy... so you might not like my suggestions :/

Hi there ^^. Here are a few of my favs:

Spare the rod, and spoil the child! by fliuor: http://www.asianfanfics.com/story/view/684033/spare-the-rod-and-spoil-the-child-baekyeol-kaisoo-xiuhan-ot12-fanxing-suchen-hogwartsau

Pure-blood with A Pure Heart by jas1922: http://www.asianfanfics.com/story/view/887584/pure-blood-with-a-pure-heart-exo-hunhan-baekyeol-kaisoo-ot12-harrypotterau

Another Bakery Story by thatweirdo: http://www.asianfanfics.com/story/view/810142/another-bakery-story-kaisoo

How do you like your ramen? by Lotusk: http://www.asianfanfics.com/story/view/845881/how-do-you-like-your-ramen-fluff-romance-jongin-kyungsoo-kaisoo

Phantom Crimes by theslyfox: http://www.asianfanfics.com/story/view/962033/phantom-crimes-angst-crime-mystery-exo-chen-baekyeol-kaisoo

Wow that font color really hurt my eyes.

I like Kaisoo too btw.

I don't read here that much, but if you haven't read these, then read:
10080 (ChanBaek)
Anterograde Tomorrow (Kaisoo)
Absolute Chanyeol (ChanBaek)
Baby Story (Kaisoo)

I'd recommend more, but I read in Spanish. If you speak it, I can recommend you some.

welcome to aff and to the fandom! start with these authors (literally everything from them) they are my favorite!
http://www.asianfanfics.com/profile/view_author_stories/970290/L
http://www.asianfanfics.com/profile/view_author_stories/123479/L
http://www.asianfanfics.com/profile/view_author_stories/633598/L
http://www.asianfanfics.com/profile/view_author_stories/178032/L
http://www.asianfanfics.com/profile/view_author_stories/659879/L