Kairi/Sora/Riku - Fluff & Comfort
Like Always by The13thBlackCat
https://archiveofourown.org/works/10118597
Sora and Kairi have been dating for a few weeks, and everything is great, even though Riku kind of hates it (but mostly doesn't, but kind of does). Except when it's not, because it's not the three of them anymore--now it's them, and him. And to complicate matters, Sora's just found out things about Riku he's not supposed to.
They Dreamed, I Dropped by dreamtowns
https://archiveofourown.org/works/9246155
For a while, Sora lived in his small world of three — it included himself, Kairi, and Riku. They were his everything, and he was theirs. But then their little world of sunshine and seas was swallowed by a thriving darkness, and they were thrown into the midst of a chaos that once spanned decades. Suddenly, Sora was on his own for the first time in forever, and while he kept his smile on his face, he found himself drowning instead of swimming.
Five years later, they’re living in Radiant Guardian as Keyblade Masters — and Sora wonders on when their relationship came to be so awkward and distant, and he is keen on ignoring the hurt that sprawls over his skin.
(a year after Xehanort is defeated, all of the Keybearers live in the newly designed castle of Radiant Garden, and Sora is secretly an Empath.)
a jug of wine, and thou beside me by spacebeyoncee
https://archiveofourown.org/works/31133717
“This,” Kairi declares proudly, “is paopu wine.”
the search and recovery for sora is successful, and sora, riku, and kairi take a moment to themselves after so long apart. but wine is known for loosening the tongue -
perhaps it's time to clear the air, some.
Sifting Gold Sands by cureelliot
https://archiveofourown.org/works/2519084
Riku has another late night with the newest inhabitant of the Destiny Islands.
Cupcake Lunch by enbycupcake
https://archiveofourown.org/works/17856185
It's Riku's birthday, and his best friends have made him cupcakes just like they used to before everything happened. What's not usual is Kairi telling Tidus that he's her boyfriend at lunch.