"Sweater Weather"

"Danny! You up?" It was Sam's voice. Danny rolled over in his bed, wanting to get at least five more minutes of peace into his Monday morning. Sadly, he felt someone shaking him by his shoulder, trying to get him to wake up. Danny blearily opened his eyes. The only face he'd ever be willing to see before the sun came up was staring down at him.
"I know you're awake," Sam said.
"So what if I am?" Danny sat up and rubbed the last traces of sleep from his eyes.
"Get up! If you don't, I'll be late, and you wouldn't want my wrath on you if I am."
"Ok, ok, I'm up." Danny then promptly rolled back over and pulled his star-covered comforter over his head. Danny was perfectly content to stay under the warm covers, but then they weren't so warm anymore. A chill rolled down his spine, and Danny could see a drift of mist rise in front of his face then fade into the embroidered stars.
"Welp, you going to get up now?" Sam asked. She's seen a bit of blue mist in the air above Danny's covered head.
"What choice do I have?" Danny sighed as he pushed the covers off to the side. Danny got up and pulled on a clean shirt, then went to the bathroom to finish getting changed. Sam, meanwhile, made Danny's bed for him.
"Where's Tucker?" Danny asked through the cracked door across the hall from his own.
"He caught the flu," Sam replied as she straightened the sheets and picked up a few stray shirts.
"He's never got sick this early." The bathroom door swung open.
"I know, it's only October." Sam plopped down on the bed next to Danny, who was pulling on his worn-out sneakers. "Speaking of which, what're you gonna be for Halloween?" Sam continued.
"I've already got a built-in costume," Danny smirked as the pair walked down the stairs. He grabbed a sweater off the banister.
"Pfft, you'd be dead before you stepped out the door." Danny locked the door behind them as they went to the small alley next to FentonWorks.
"I'm already halfway there," Danny's sarcasm was already working its way into their conversation, and thus, Sam was not surprised in the least when a flash of white almost blinded her.
"Warn me next time, ok?" Sam complained. In the black-haired, blue-eyed boy's place stood the white-haired, green-eyed Danny Phantom, the ghostly protector of Amity Park.
"Oh, sorry." Danny apologized. There was a moment of awkward silence. "Welp. Wanna ride?" Danny asked.
"Might as well." Sam shrugged. In response, Danny turned invisible. Sam felt a spike of panic when she felt something touch her shoulder. But then a coolness spread over her, starting in her shoulder and ending at her toes. She looked to her left, and could now see an outline as though he was dust in a sunbeam. Then Danny rose into the air and he carefully lifted Sam by her wrists into the air.

The autumn air was refreshing to both Danny-who'd gotten home at three the night before, and Sam- who'd accidentally stayed up until two playing the new VR Doomed. There was a comfortable silence as Danny headed towards the school, with a few minutes to spare, for Sam at least. They landed in between the school's AC units and Danny sighed, knowing he was most likely going to miss the first period.
"Thanks." Sam said as the cool numbness she felt faded and Danny let go. Danny smiled tiredly, but then he noticed Sam was holding on to herself.
"Sam, you okay?"
"Yeah, of course. It's just a bit chillier than I thought." Danny thought for a second before he transformed.
"What are you doing? Aren't you going to go check out where that ghost is?" Danny didn't reply but took off his sweater. He held it out to Sam. She pushed his hand away.
"Danny, it's yours. You don't want to get sick, do you?"
"You need it more than I do." He went behind Sam and set it over her shoulders.
"Besides." Danny changed back to his alter-ego, "The cold never bothered me anyway." He then took off before Sam could scold him for his cheap joke.

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I didn't even know Ectober prompts and stuff existed this time last year, guess I was too focused on the My Little Pony Movie to notice.