Follow Your Passion: A Seamless Tumblr Journey
So this isn't for a pairing I ever, EVER, thought I would ship, but it was late last night (like 3am, hence my being off my head today) and I fell down some AO3 hole, and jesus this is so well written and amazing. YOU SHOULD READ IT.
Two parts. AOS AU where Kirk leaves Starfleet to be an architect and ends up falling in love with Spock Prime. I opened it for a giggle, and just woosh. Brilliance.