Rating: T-ish
Words: 366
Some more slave fic todays.
Ultra lay on his berth, Optimus wrapped in a blanket beside him. They were now underway to Cybertron. The previous sol had been blissful and nerve wracking and they both had returned worn out.
Ultra pet Optimus softly, remembering their interface. He had gone slow and been gentle while giving Optimus the best interface he could. It had hurt his spark when, at the start, Optimus had simply opened his plates, baring his cold spark, expecting Ultra to take him for his own pleasure only. Sadly, Ultra knew he probably didn't understand what a real interface was. So Ultra had played with his seams, wires, headfins, and spark until the little bot was hot and writhing on the berth, a delicious sight which made his own spark hot. As soon as he brought his spark in contact with Optimus' the bot had overloaded, pushing Ultra quickly towards his own overload, which knocked Optimus offline for several megacycles.
After he onlined and fueled, Ultra took him to the council to prove his 'ownership'. He hated having to ask Optimus to act like a slave once again and even walk on his own peds, but Optimus had informed him that a slave was not carried, even when their peds were irreparably damaged. Though Ultra had come up with an excuse to hold him in the council chambers, after the scans which, once again, hurt Optimus. But he held the bot, pretending to play with him after having 'ordered' him not to open. In reality, he'd asked Optimus to play along with his farce.
Returning to the Steelhaven, they'd both immediately been accosted by Red Alert, who had fussed over them both equally, mostly to keep Optimus from being overwhelmed, before telling them both to go recharge and for Optimus to 'keep the frag off his peds!'
Ultra hadn't been able to actually fall into recharge, but he made an effort so that Optimus would recharge. The bot seemed to think he could not recharge while Ultra was online. But Ultra was not about to reinforce that notion. Optimus would need all the rest he could get. When they returned, he had a long and complicated recovery waiting.