Stiles finds a puppy in the woods. Actually, maybe a cub is a little more precise? Whatever. It’s not like he needs to tell anybody he found an actual wolf cub. They would totally take it from him and Stiles is not going to let them take his little buddy. Nope. Not a chance. (He might beg Scott long enough for giving his ‘pup’ necessary shots by himself without Deaton’s supervision, and creating a false card about Stiles’ cub being a puppy. Street mix or something. He’s an amazing best friend like that.)
The only annoying thing about all of it is, Derek isn’t pleased and he shows it loud and clear.
"Stiles you can’t live with a wolf!"
"Why the hell not? I can train him. It’s like a dog and it’s still hell of a safer than werewolves. It definitely bites less than you do- Ouch! Hey!"
But it’s not like Derek can actually talk into Stiles’ life. (He tries, but that damn kid is so stubborn.)
So Stiles gets to keep that hyperactive ball with shinning blue eyes and thick black fur.
"I bet you would look like that, if you could turn into a real wolf. Whaddaya think, Scotty? Cute and fluff- Ouch! Hey!"
And because he’s sick fuck, who thinks he’s funny, he names it Happy.
"Come on, Sourwolf, he IS happy. All the time. It’s perfect! Also, you complete each other- Ouch! Hey! Stop hitting me!"
And he loves it, and adores it, and Derek watches from afar, how Stiles coos over it, even if it gives him hard time with its inability to go on the newspaper, when it needs to. Stiles is so committed to that thing, he’s sometimes dead tired because he’s been awake most of the night, playing with it and training it and doing everything to make it even more happy.
But the thing is, it’s Stiles, who is happy. It’s kind of irony, really. But Derek can’t not see how Stiles slowly changes from the neurotic pile of nerves into normal healthy teenager, which he should have been in the first place. So he shut’s up. And when he first time comes into Stiles laughing with his whole body, because of that furry thing, he just stops, mesmerized, and wishes, he could see that all the time. It seem so right. Stiles never laughed like that before. Never smelled like happines and content. So maybe Derek decides to give that little furry ball of energy a chance. If it makes Stiles this happy, how could Derek want to take it from him?
So he stop growl at it every time he sees it. And there is that one time, when he actually pets Happy, when nobody is looking. (Or he thinks so. Stiles stays quiet, before retreating back into the kitchen with warm smile on his face.) And maybe he sometimes goes on a walk with Stiles and Happy. And takes it in for a weekend, when Stiles needs to take care of his grandma few towns over and can’t take Happy with him.
And maybe Derek likes those mornings, when he can take Happy for a run, because Stiles is dead to the world, because he did research until dawn.
And maybe Derek can’t see those looks Stiles gives him every time he catches Derek’s wide smile, while werewolf whispers things to his furry distant relative while petting him behind his ears.
Because it’s not like Stiles can fell his heart clench on that sight. Or Derek can’t sleep if Stiles’ scent isn’t strong enough in his loft, because he didn’t swing by with Happy after their walk.
And only maybe it’s Happy, who totally ruins their first kiss by licking their faces vigorously. Making them groan and laugh.
But that’s okay, they have the second, and the third, and all those after.