If you mean stories about their pairings, then, this is my list:

•KRYBER
Lupin by hot-d_STILLed
Paperhearts by DonkeyASS
A Dream for a Dream by Ramen_Soup
Liking my instagram photo by iamblue035
Entangled In by 79alexandreia
Getting Your Girl by Ramen_Soup

•TAENY
Animal by MeGustaSNSD
Target.Locked. by HolyCrab
Pursuit of Parallel Happiness by HolyCrab
The Princess Protection Program by -GIRLsGENERATION

•YULSIC
To the one who holds my heart by Sleepy_IceCream
Heart breaker by OfficialPao
Not so lonely island by InfinityPenguins
The Queer life of Kwon Yuri by withaheartbeat
I Love Your Girl by InfinityPenguins

•FT THE THREE COUPLES
Losing to the heat by itsakyo
S.W.A.G(secretly we are gay)[TaeNy and YulSic] by 01Supergirl05
Dirty Plan[KryBer and YulSic] by elcamadore


Well, thats the list. I hope you enjoy them as well as I did.

who i was, from the start - darkaslay (YoonYul ft. JeTi, AU, Soshified & livejournal)

Endless Season - kijeok (TaeNy, canon, Soshified, incomplete)

For the Big Sun - dashelots (SunSic, AU, livejournal)

Der Märchenclub - pinboo (SuperGeneration, horror AU, AFF)

Plant - greenred (JeTi, AU, Soshified)

C'est la Mort - boxxsaltz (JeTi, vampire AU, livejournal)

Smiling Eyes - kimnams (SeulDy, predebut canon, AFF)

Loveless - klee95 (EunYeon, fantasy AU, T-ara Diadem)

I am a big fan of AU.

My guardian angel(kinda new

Brain :D
And My single Parent (Not completed), the author hasn't updated for such long time