It was a busy night for the Transformers. Optimus Prime was speaking with Prowl, and they were going to be scouring the city to seek out Jazz and Bumblebee since the two had gone missing, and Ultra Magnus and Ratchet were in the middle of repairs. So since they were worrying over that, Sari was on the roof, just looking at the moon as it hung in the sky like a beautiful giant diamond. She lay on a blanket she’d brought, hands behind her head as the stars twinkled gently above. “Twinkle, twinkle, little star, how I wonder what you are. Up above the world so high, like a diamond in the sky.” Sari softly sang out. “The oldies really are the classics.”

Meanwhile, unbeknownst to Sari, BlackArachnia  was not too far from her in her alternate mode, having left the Decepticons behind. She was so damn tired of them mocking her for her half-organic nature, and even more tired of them mocking her for being in the middle of her cycle. She was desperate for interaction of the most personal kind, and she wasn’t interested in any of them. Not one iota. No way was she going to interface with Starscream, that’s for sure. And no, not Megatron. He was a rough, unfeeling fool. 

She had thought about resorting to an autobot, hence why she’d captured them, but when it came time to do it…she couldn’t bring herself to. Deep down, she still considered herself an autobot and she didn’t want to do that to her own kind. So she’d just left them there, and-

Wait. Her spider sense was tingling, she could feel something close by. Her instincts flared up as she skittered across the roof of a nearby building, catching sight of the young lass that was Sari Sumdac. Ah, the little femme that hung out with the autobots, dear Sari. BlackArachnia  smiled. The girl was part technological, after all. So this meant she’d do. And she wasn’t really an autobot, so…perfect!

Of course, it would take some convincing to get Sari to do what she needed, so she put on a soft, honeyed voice as her voice rang out over the roof.

“Lovely night, isn’t it Sari?”  Sari jolted up with a start, startled that she was now the apparent target of the femme bot, reeling back a bit.

“Oh no, no, no! Hold on there, Spider lady, I want nothing to do with you!” Sari stated, trying to move away.  BlackArachnia inwardly bit her lip.

“I’m going to have to play this a bit more smoothly.” She thought.

“I heard about your friends. I’m sorry to hear they’re missing, but I’m sure they’ll be found just fine. You do have the best tracker in the galaxy looking for them.” BlackArachnia offered. And she wasn’t being dishonest, the autobots were fine. 

“Wait…how did you hear about it?” Sari wanted to know, arms folded over her chest.

“I had captured them, I needed some…assistance with a private matter. A…very private matter.”

Sari blinked, then realized what BlackArachnia was talking about. She was young, but not stupid. “Ohhhhh.” She murmured. “Oh. Gee. That, huh? That “time of the month” kind of thing?”

“Yes, that’s how your species refers to it. A private, woman thing. I’m, as they say, in  “heat”.” The spider-esque decepticon remarked. “Could we talk more privately, somewhere else, I’d would much rather not talk about my need for sexual gratification around autobot ears.”

“I guess.” Sari remarked with a shrug. “I can understand.” She admitted, climbing on top of Blackarachnia’s back. “I’m a cyborg but even I’ve got women things I’m just coming into. I get the urge to…er…you know. Um…touch myself down there? I’m getting that a lot lately. So I try to get alone to calm down and just try to relax. Being up on the roof helps.”

The spider-bot carried Sari down the roof as carefully as she could, slinking through the alleyways, heading into a nearby warehouse filled with mattresses. Unbeknownst to Sari, and even to the spider-like Transformer herself, BlackArachnia was emitting pheromones that were slowly but surely sinking into Sari, making her feel far more open to talking about more…comfortable…around the Decepticon.

Indeed, Sari felt strange, as if her entire body was on fire with want and need. As the two came to a stop, Sari realized she was rubbing her body against the spider bot’s back.  “Oh! I’m-I’m sorry, I…I didn’t mean to.” She apologized, sliding off of BlackArachnia as the Transformer reconfigured herself into her bot mode, kneeling down by Sari. 

“It’s alright. We can feel comfortable with each other.” She reasoned gently, as she used one of her spider legs to rub Sari in a gentle fashion, being rewarded with a small moan of lust.  The leg, sensitive to picking up even the most minute details, began to gently rub the oft bumps on Sari’s chest, quietly slipping under the shirt and bra.  Sari moaned and without thinking, she began to take them off, BlackArachnia keeping her touches sensual and light. Her organic side was kicking in, she could tell what she needed to do. Another leg ran down Sari’s skirt and brushed against her womanhood, Sari feeling her lower parts become aflame. She rubbed up against it BlackArachnia  processed this quickly, and smiled. Perfect. Soon Sari had taken off all her clothes and the spider was moving her legs and her hands along the sweaty, supple young form, which was even getting Archnia’s own womanhood gushing. 

The Transformer brought Sari close to her, kissing her, Sari letting out a moan as her body was explored by the spider. It felt positively perfect. So natural, so right. She lowered her head, her tongue playfully teasing Sari’s clit, Sari enjoying the licks and exploring of the Transformer’s tongue, letting out a gasp as BlackArachnia was rewarded with sweet, delicious juices for her work. 

With Sari positively wiped, BlackArachnia now picked her up, giving her a playful lick. “Don’t worry, I don’t bite.” She giggled, her tongue running over Sari once more before she opened her maw, easing Sari inside. She enjoyed every bit of delightful flavor, Sari soon coated in the spider-bot’s saliva. Sari was wrapped up in the tongue as it massaged her delicate body, BlackArachnia tilting her head back and with a mighty swallow, was sent down her throat. BlackArachnia could feel the small bulge Sari created in her neck as she was slowly pulled down to her stomach, massaged by the mighty throat muscles of the spider-esque Transformer as she was plopped down into Blackarachnia’s belly, a storage unit that slightly stank of energon. It was surprisingly soft within, the walls like a couch as BlackArachnia patted her stomach and sighed blissfully.

“Ohhh. That was lovely.” She murmured, licking her lips, getting the last remnants of Sari’s flavor. “I’ll let you out eventually, I’ve GOT to do that again. Besides, it seems like you liked it.”

Sari blushed from deep inside BlackArachnia. “Well…yeah, I kind of did. Thanks.” She admitted. “But, um…maybe we’d better not tell anyone else about this. I’m not so sure they’d be comfortable with it.”

“It can be our little secret.” BlackArachnia giggled.