secret tattoos; kanghyuk
Sometimes, Kangin likes to wear these shirts, ones that drive Eunhyuk crazy. They're low-cut all up in the front, but that's not what Eunhyuk looks at (though he occasionally does anyways). Usually, they're loose, and unlike when Kangin's wearing a regular T-shirt, Eunhyuk can see the older male's tattoo peeking up from under, half uncovered.
Sometimes, Kangin purposely walks in front of Eunhyuk when he's wearing shirts like that, but Eunhyuk doesn't know he does it with intent. All he knows is that he often finds himself staring at the inked skin (though he swears he tries not to), and realizes that he wants to trail his fingers along it, tracing out the unspoken words that are engraved into flesh.
Eunhyuk also doesn't know that Kangin knows.
It's not his fault that Heechul-sshi has sharp, sharp, knowing eyes that see things most people would miss - lingering looks, shifty eyes, nervous laughter. It's not his fault that Heechul and Leeteuk and Sungmin gossip like school girls, at inconceivable times in the day. It's not his fault that Leeteuk has a habit of telling secrets to band members, that Heechul likes to stir up things, that Sungmin is mischievous in that way of his.
It is his fault though, when he asks to touch his hyung's tattoo one day. The question slips out before he can even register it, Kangin having sat in front of him in the car and a teasing glimpse of the tattoo taunting him from its spot. A second later, the words that've escaped make themselves known and a flush burns his cheeks, but when Kangin answers half a minute later, Eunhyuk isn't embarrassed enough to pass up the chance of running his fingers against the smooth skin of Kangin's upper back.
He almost, almost, regrets it though when Kangin follows up with a, "Want to get a tattoo with me?"
Two days after, Eunhyuk has a small tattoo on the left side of his hipbone that no one but two know about.