[non-challenge fic] Indivisible - OptimusxSideswipe

[dracoqueen22]

a/n: Part of an ongoing series originally written for a tf-rare-pairings challenge some many weeks back. I'd highly recommend reading parts one through three first in order to get the full effect.

Title: Indivisible 4.0
Author: dracoqueen22
Universe: Bayverse, during and post-RotF, Indivisible 'verse
Characters: OptimusxSideswipe, Ratchet, Ironhide
Rating: T
Warnings: canonical character death and resurrection, angst, fluff
Description: Optimus had not made any promises. Sideswipe wished he had demanded one.