Title: Perpetual

Pairing: Sterek, Stiles/Derek

Warnings: M/M, mature situations

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Part 4

No matter how hard he tried, Stiles couldn't figure out how his life had flipped around so dramatically. One night had turned into three and then after a quick discussion with his father, he had invited Isaac to permanently reside in the guest bedroom. At least until there came a time when he would no longer need it. Until that time came, Stiles was quite content with having the younger boy around.

Not only did the silence of the house cease to exist, but it gave Stiles something to focus his attention on consistently. Before, he would go to school, finish his homework, do research for the pack that still went ungratified, and then would sit at home bored most nights. With Isaac living in the house, he was suddenly busy and never left alone for more than an hour at a time.

On Isaac's fourth night in the Stilinski household, Stiles had woken up in a pool of his own sweat. A groan poured from his throat as he tried to kick off his covers, only to find that the entire right side of his body was pinned to the mattress. Glancing down, he found Isaac curled up against his side, an arm thrown around Stiles waist. It wasn't embarrassing like Stiles thought it should have been.

Instead of waking the boy up, Stiles simply shifted a bit until his left leg was uncovered before falling back into an easier sleep. When they woke up the next morning, Isaac gave him a simple apology and no explanation; though Stiles didn't press the issue. The boy nuzzled into Stiles neck thoroughly before getting out of the bed and leaving the room.

Two nights later the incident was repeated. This time Stiles was woken by this incessant shaking only to find Isaac curled up against him with tremors wracking his body. Air was being sucked into the boys mouth deeply, blown out quickly and then repeated. The clear signs of hyperventilation cued Stiles worry and concern as he flipped onto his side and pulled the boy into his arms; tangling their legs together.

When the tremors didn't cease or even relax, Stiles began to hum. It was a song that he couldn't remember the words to, but it was a melody that his mother had sung to him as a child. During the nights after his mothers death, he would hum that song to himself when he would wake in tears. Moments later, Isaac began to relax in his grip until finally his breathing evened out and Stiles knew that he had fallen asleep.

The nights started to blend together after that and Stiles couldn't count how many times Isaac snuck into his bed. He knew to leave his door cracked with a nightlight on, just in case Isaac wandered in. Weeks passed and there was this sudden drive for Stiles to just keep moving. Though it was confusing and he barely understood what was going on, Stiles knew that he hadn't felt this alive, this needed in a long time. It was...really nice.

That was until Derek came around one afternoon before Isaac had gotten home from a study session with Erica. Stiles opened the front door with a bright smile, "Isaac you know that you can just walk in..." When he realized that it was in fact someone else, his eyes widened a fraction before giving the man a sheepish smile, "Oh sorry man. What are you doing here?"

Derek just stood there with a watchful look that Stiles was loathe to say that he recognized. Rolling his eyes he motioned for Derek to come inside before leaving the door open and turning heel to make his way back into the kitchen. A pot of water and diced potatoes were on the stove boiling lowly, soon to be mashed potatoes while a set of steaks were frying in the oven.

Over his shoulder he heard the door close and when he finished buttering up a loaf of bread, he pulled a beer out of the fridge for Derek and a bottle of water for himself. He sat down in one of the bar stools as the man walked into the kitchen. With a patience that he was known for, he simply waiting for Derek to speak up about whatever was on his mind.

Even though Stiles slid the beer to him, Derek just set it aside causing the younger to remember suddenly that werewolves weren't effected by alcohol. "Isaac has been staying here." It was a statement that Stiles had expected at some point, seeing as Isaac had been living with him for more than two weeks. He nodded when Derek continued to eye him. "Why is that?"

Taking another swig of his water, Stiles screwed the cap back onto the bottle. "A few weeks ago, he approached me to borrow a coat because it was getting cold outside. The warehouse was fine for him to stay in the summer, but it's getting winter and it's not healthy for him to be there." Derek's eyebrows furrowed and Stiles sighed. "Look man, I know you're his alpha. But even werewolves need comfortable, warm surroundings. You cannot survive on take out and no proper air ventilation."

When the man continued his silence, Stiles simply went back to fixing the dinner he was fixing that night. He added some garlic to the buttered bread and put it into the stove below the steaks before draining the water from the potatoes. As he mashed the softened potatoes, he added some butter and salt. With the side dish ready, Stiles pulled the steaks from the oven, setting the pan onto a heat pad.

There was a soft pop sound and when Stiles looked back, Derek had set himself into on of the seats and had opened the beer. A small smile lit upon his lips and Stiles had to force himself to focus on finishing the meal. "It's been nice having Isaac around anyway." A soft hum answered him as he pulled the toasted bread from the oven. Plates were then set out along with four glasses of ice and the usual jar of lemonade. When Derek rose an eyebrow, Stiles clarified, "Isaac, Scott, You and I."

"I won't be staying." The words falling roughly from his mouth as Derek stood. With a frown, Stiles just nodded as an answer; waiting to see if the man would say anything more. "If Isaac becomes any trouble, tell me." Shock coursed through him and Stiles frown deepened before his expression morphed into something akin to admiration when Derek turned back as he walked away, "Thank you for taking care of him."

Then he was gone and the front door opened, then slammed shut softly. Stiles was left sitting at the counter with a bar full of food. He was more confused that he was before, but he was at least a little comforted by the fact that Derek wouldn't try to take Isaac back. Just minutes later the door was flung open again and the noises of Isaac and Scott stumbling into the house brought a smile to his face once more.

The next day, Stiles walked out to his jeep after class with Isaac close on his heels. As they turned into the parking lot, Stiles rose his eyebrows when he found Boyd leaning against it. When they approached the boy nodded to them, "Derek is calling a meeting tonight. It's really just to check in with everyone." Isaac swayed on his heels and if Stiles knew better he still would have said that Isaac's tail was wagging.

"Sure thing. Want a ride? We'll go over now." A glimmer of shock flashed through Boyd's eyes before his expression became neutral once more. He shared a look with Isaac, to which the boy subtly nodded in a way that they thought Stiles didn't see. Turning towards the jeep, he hid his smirk and walked around to the drivers side. He revved up the engine as the two climbed into the vehicle.

The drive to the warehouse was short, though the ride wasn't silent. Boyd had sported a surprised look as Stiles began talking about all sorts of things; asking all sorts of questions to get Boyd involved in the conversation. The topics ranged from school to work, from family to the pack, from Isaac to Erica. Every now and then Isaac would pop in with something, even as Stiles lead most of the discussion.

As they stepped out of the jeep and wandered into the warehouse, Stiles smiled when he found that everyone else had arrived before them. From across the room Derek shifted as he found Boyd with Stiles and for the life of him, Stiles couldn't read the expression on his face. Then Scott was on him, pulling him into a tight hug that made Stiles wheeze with laughter; especially when Isaac with a worried expression went to pry Scott's hands off with the soft admonishment to "be easy with him."

When he was released from the vice like grip, Stiles walked over to the table that served as their strategy planning station and sat at one of the chairs. Lydia and Jackson sat across from him; Lydia giving him a look as if she knew something that he didn't and he shifted almost nervously in his seat. When there was knowledge that Lydia knew before anyone else, it didn't usually bode well for anyone involved.

Even though she would sneak glances at him, she didn't say a word. It allowed Stiles to revel in relief for just a moment before Erica came waltzing over in those heels that Stiles swore were too high. She slid into the seat next to him and leaned her elbows against the table, "Alright then. We're all here. Any news from anyone that needs telling?"

There was a huff of laughter from Jackson as the boy rolled his eyes and Stiles shook his head with a smirk. "Then let's go! We've got a movie to watch tonight." Lydia elbowed him in the side and he huffed, even though everyone knew that it really didn't phase him. "Fine, alright. So, I've heard that you've adopted a lost puppy Stilinski!" Laughter echoed off the walls as Jackson laughed at his joke, even as Isaac growled lowly from his seat on the other side of Stiles.

Rolling his eyes, Stiles just muttered, "You're just jealous because you don't get to eat my cooking every night." There was one time, months ago when Stiles made dinner for the pack. It had been something quick considering that they were at war with the alpha pack at the time, but none the less everyone remembered the meal. Jackson's eyes narrowed at the statement though he quickly tried to look nonchalant.

"He feeds you every night Lahey?"

Isaac was quick to smirk at the statement and for a moment Jackson's expression morphed into one of jealousy before he covered it again with a huff. "You mean he cooks for us every night!" Scott piped in, not able to pass up the opportunity to help break Jackson's mask. The boy in turn glared at Scott with a deep frown. Stiles just leaned back in his seat with a sigh as Derek eyed him from his place leaning against the wall.

Derek hadn't known that Scott had been going to Stiles for dinner every night either. Then the entire table erupted into an argument on how it was and wasn't fair that Stiles was cooking for some of the pack but not the rest. Jackson and Isaac were at each others throats, standing on either side of the table, growling viciously at one another. Beside him, Erica cackled gleefully as Jackson literally vaulted over the table sending Isaac and himself to the floor.

Rubbing a hand over his eyes, Stiles frowned before glancing over at Derek with that Separate Your Children glare and within a moment Isaac was stuffed back into his chair with Jackson being shoved into his. Stiles shifted closer and wrapped his arm around Isaac's waist, unsurprised when the boy nuzzled against his cheek. Finally after many more arguments and all around pack time, Derek announced that the meeting was over and Scott was all but dragging him to the door.

As Stiles lifted himself into the van, he waved a farewell to Derek who nodded back. With Isaac and Scott safely in the car, Stiles drove them to the lacrosse field and dropped them on the curb. "Have fun at practice guys! I've got that project to finish and I've already talked with coach. See you both at home!" The two nodded and Isaac took Stiles wrist and nosed at it for a moment before they ran up the embankment and onto the field.

Shaking his head, Stiles drove the distance between the school and his house without a second thought. Making sure that he grabbed his book bag, he made his way into the house with a bounce in his step. He slammed the door behind him and threw his bag onto the couch. Taking two steps at a time he ran up the stairs and into his room to grab his laptop. "Hey Stilinski!" Stiles fell back against his bedroom door frame as he turned to find Erica sitting on his bed, a hand held to his heart. He took a deep breath. That wasn't funny.