Frostfall (TFP Optimus x Mech!Reader)

Frozen and forgotten from time itself. That was what Y/D was. For centuries he was trapped in an ice cavern until a group of human researchers discovered his fate. The news of the discovery would reach an old friend's audails, a friend whom had believed that Y/D was long gone.
----
A/n I've had this idea floating in my head for a bit and finally I'm pitting it into action. Fingers crossed.