#all grown up and healthy and blessedly *alive*. except orion doesn't fucking remember any of them and is very confused as to why

[peace-hunter]

tfone au where OP is created as the last of the primes but way after them, a sparkling born at what were thought to be the last days of the war against the quintessons, the beginning of a new generation of peace after eons of war. a child meant to be loved and raised knowing nothing of war nor sacrifice.

he's kept mostly out of the spotlight by his siblings, who don't wish to expose him to everyone's optics so young, and want to wait until the war is done and over to properly introduce him to their people.

except of course the primes are betrayed and murdered by sentinel, the war is lost and everyone who knows and cared for the truth is either banished or outright killed in order to suppress it.

and the high guard, the ones the primes trusted the most, the ones that were supposed to protect them, the ones who failed in their most important duty, have to make a choice. to take the last prime, their last hope, with them to the surface, a hostile environment where there's little to no supplies and where they'll be hunted down by both sentinel and the quintessons as the biggest threat to their regimen.

or hide him in plain sight. place him where sentinel won't think to look for him. one more sparkling among many. and hope it will be enough to keep him alive. pray to primus that he'll protect his last child long enough for them to come back for him when it's safer (even if most of them have already lost their faith on him when he allowed the rest of his children to be massacred like that)

they almost lose their resolve when they realize they will have to take the little one's cog away in order to make him blend in with the rest of the newborns (and oh do they burn with murderous intent when they see what sentinel has done to their people but it's not the time yet-) but in the end they decide an impaired little prime is better than a dead one.

and so in the chaos of thirteen dead primes and a sudden energon crisis, a little sparkling who very few mechs really knew about and even fewer had seen completely vanishes. and in the depths of iacon a mech in charge of a new batch of newborns scratches their helm in confusion as they realize they must have miscounted the first time.

optimus prime is quietly erased from any official records by sentinel, written off as dead when they find a sparkling's frame mangled beyond recognition after an attack on the base of those rebels that insist on being a thorn on his side. killing the sparkling hadn't been precisely in his plans, he probably could've found some use for it after all, but he's not particularly upset about it either.

and orion pax grows up with an ache on his spark that tells him he's missing something far more important than a t-cog and dreams of gentle and loving hands, cradling him against the frames of mechs he cannot recall the faces of.