Chapter Text
Optimus Prime came back home after a long, arduous cycle of dealing with Sentinel and the Elite guard. He let out a heavy sigh and placed down his equipment on his small table, rubbing his helm in exasperation. These new laws that Sentinel are planning to pass would turn Cybertron into more of a militaristic hellscape than it already was under Magnus, and he is removing the rights of not only the decepticons, but even larger autobots who could carry children easily. Plus, most of them seemed to subtly benefit Sentinel Magnus and decrease the power of the already shaky council. He groaned, worry weighing over him as he sat in a chair. A delicious smell kissed his olfactory sensors, and he looked over. It was a plate of homemade silicone wafers, with a fresh-brewed can of cool oil. Optimus' storage unit growled at him, and he smiled sheepishly as he gratefully took the snack. Ever since Megatron and Ultra Magnus moved in, he swore he gained five tons from their excellent culinary skills. He shook his head with a chuckle as he ate the offered food, closing his eyes in pleasure. "Good ol' Magnus." He hummed, knowing that Megatron would most likely not have made him anything. He is still rather standoffish to the young Prime, even if he has softened a little. He polished off his plate as Megatron's words echoed back from him during the first day of his life as Optimus' mate. "Do you really think that being a nice master will ever make me your loyal concubine?"
Optimus' spark dropped at that memory, biting back a soft sob as he put up his dishes. Does he still see him like that? He tried to release Megatron, he really did. But Sentinel Magnus harshly rebuked his efforts, especially seeing that he did not even spark up Ultra yet, who should be a much easier mech. He wiped a threatening tear from his optic, he already was in a scrap mood beforehand. Why must he make himself feel worse? He turned off the kitchen light, noticing that he had not seen either of the older mechs yet. He groaned, knowing that Sentinel will chew him out for not having either of his concubines on a tighter leash. "It's not my fault that they are literally twice my size..." He grumbled, stepping into the living room to turn off the TV that was left on. A gentle snore made him turn, and his spark melted at the tender sight before him.
Megatron and Ultra were asleep on the couch, the old warlord hugging the former Magnus into his massive chest as Ultra had his servo around his waist. Optimus smiled at the two, glad to see the carriers close once again. He remembered in the history books how Megatron and Ultra were good friends before the civil war, so perhaps being in a more stable environment has helped rekindle their relationship. But, a nasty line of code wormed it's way into his processor. "I don't think I belong in this." Yearning ate at him, but he knew he had to be realistic. Even though he tried his best to give them freedom, even though he was rather close with Ultra, the fact of the matter is that he is still their jailer. Optimus turned off the TV and grabbed a blanket for the two carriers, even though it was comically small compared to them.
A red light caught Optimus' attention, and he flinched away. Megatron. The decepticon leader must have woke up when he turned the TV off. He smiled sheepishly. "Sorry for waking you up. I can leave now." He whispered, Megatron grabbing his arm carefully. Optimus stifled a cry of shock, feeling the massive mech gently trace his fingers down his grill. He flushed, but stayed as Megatron looked at him with a surprisingly warm expression. "Must you leave us already, little autobot? We missed you dearly." He cooed, Optimus' surprise clear on his faceplate. "We?" He mouthed, Megatron smiling as he pulled him close. "Mhm. Now, young autobot. Come closer. You should learn to be more comfortable with your mate, hm?" Optimus hesitated, glancing at Magnus. He was still asleep, his engine on idle. Optimus' heavy pedes were planted, his instincts telling him that this is some kind of trap. After all, why would Megatron do a complete 180 on his feelings about him? But then Megatron seemed to understand Optimus' hesitation, and his smile became sadder, hints of guilt in his optics as he hesitantly let go of him. "Ah, I apologize, young Prime. Ultra and I are comfortable here, but thank you for the blanket." He narrowed his eyes at him in approval, Optimus' guard shattering at that. He got closer, his engine clicking on with a purr. "No, you are right. Can I get between you two?" Megatron eyes lit up, and he grabbed Optimus' slim waist with a grin, Optimus in awe at his immense strength as he picked him up as easily as a human girl does a doll. He placed him into his side, Ultra's chubby mesh squishing into his back as Optimus' face was buried into Megatron's voluptuous chest. He blushed hard, feeling aroused despite his exhaustion. He couldn't help but feel like the luckiest mech online, especially as Megatron placed his hands into his red mesh.
Optimus gaped as his hands sunk in, him squishing the fat between his fingers as Megatron sighed in pleasure. While not as pudgy as Ultra, his years away from the pits has softened Megatron. His waist was thicker and slightly spilled out of his sides, his thighs fuller around his massive pedes. But Optimus struggled to focus on just one amazing thing about Megatron, as his massive chestplate took up his vision. He nuzzled into Megatron, feeling Ultra shift behind him and his belly lift off slightly from his back. Though he couldn't see the old bot, he could hear the smile on his former mentor's face. "Welcome back, Optimus. Mm, you two can be so loud sometimes..." He rested his head on Optimus' shoulder, the young bot purring as he was gently kissed on the helm. "I'm so glad that you are off tomorrow...we have some catching up to do." Optimus kissed Ultra back, noticing a flash of jealousy in Megatron's eyes as he did so. "Yeah, I missed you two as well. We may have to save that for later though, because I got something to get off my chest about my old pal Sentinel..." He grumbled, Ultra frowning as he massaged Optimus' shoulders. Optimus melted into his mentor's grip, not realizing how stressed he was. "You have been working so hard, I feel it in your servoes. How diligent you are..." He cooed, Optimus flushing at the praise. Megatron huffed and began to massage Optimus' thighs and pedes, the young Prime blushing hard. "You two...aah...you both really know how to please a mech..." He smiled, Megatron leaning over with pleading eyes. "It's some old programming, Optimus. I however, would prefer if I got some payment for my hard work." Ignoring Ultra's snort he leaned over, pressing his chest against Optimus' own with a smug expression.
It took the Prime a few clicks, but he laughed and kissed him on the cheek when he finally understood. He purred loudly, but didn't move. Optimus grinned and kissed him again on the lips, Ultra lowering his antenna in disapproval. "Are you not a little old to act so entitled?" He mock chided him, Megatron purposefully squishing Optimus between his belly and Ultra's chest as he winked at the old bot. "Yet it worked, didn't it? If I knew how soft his lips were-!" Ultra grinned and leaned forward, relishing in Optimus' overwhelmed gasp from between them. "It only worked because he's so inexperienced. If you tried that with our old sires, I would have heard your punishment from across the room..." Optimus' antenna perked up, wanting to hear more about his carrier's pasts. His disappointment was rather palpable as Megaton merely chuckled, a silent agreement struck between the two that Optimus has stayed up past his bedtime. Ultra eased his weight off of Optimus, though he still protectively wrapped him in his arms. Megatron gently took the two of them and placed them into his chest, though he positioned Ultra to put less of his weight on him. Ultra meanwhile wrapped Optimus in the blanket, smiling maternally down at him before hunkering down and closing his optics. The two generated such warmth and comfort, Optimus was almost embarrassed by how easily they were able to get him to sleep, like a sparkling. Megatron kissed his helm, Optimus leaning into the soft lips that covered his whole face. "I do hope you enjoyed my little snack..." He purred, winking. Optimus' antenna raised in surprise before he smiled and nuzzled him. "Ah...that was you? Thank you, Megatron. I, uh..." Megatron stroked his back, kissing him again as his engine flicked on idle. "I believe I love you too, Optimus Prime." The three went to sleep in a pile, Optimus suddenly having a little more hope for the future...