Instructor Spock Grayson, halfbreed assasin for the dark, deadly underbelly of Star Fleet meet Doctor James T. Kirk, golden poster boy joining Star Fleet and, "helping your Federation!"

...

The mission couldn't have gotten more complicated.

Original Series: Answer to Starlightscribes Reunions and Apologies challenge. (Btw, apologies if this was supposed to be based on STXII, because it is so not.) Sarek comes on board the Enterprise with a new aide in his party whom everyone will recognize--even if it comes as a surprise to him. Tension ensues, secrets are revealed, etc.

NOW COMPLETE.

James Kirk is fearless. At least that's his reputation and it's been earned. But standing here, in this chamber of horrors, the captain fears three things - losing his crew, losing his command and losing his first officer. His friend.

Something is very wrong with the colony on Deneb III. 

In style of classic TOS with its roots in a classic TOS episode.

When McCoy gets lost on an unstable planet and is nowhere to be found everybody, except for Jim, gives up on him after more than two weeks. When Jim gets in a heavy fight with Spock about it, he beams planetside alone to look for his friend, unintentionally destroying the transporter in the process. While the crew on the ship fights to stay in the unstable orbit to retrieve their Captain and possibly their CMO, Jim is overwhelmed by the effect of an unknown substance that messes with his head. Will the bond between Jim and Spock be strong enough to make it? Will Jim be able to bring back his best friend? And when something messes with his mind and emotions more and more, who will be there to save him?

A collection of space husbands short stories ranging from the five year mission to old married bliss.  Each chapter can be read as a stand-alone work.

An MPREG story about what it's like to be thrown headfirst into something you never wanted: a child. This is how Kirk and Spock cope, healthy or not. (Features pregnant!Spock, Spuhura at the beginning, slow build Spirk, set in AOSverse.)

"Friendship between Vulcan and Terra must be cemented by marriage. My youngest son, James, will marry the next Emperor of Vulcan when he turns 18, to secure an alliance between our two planets."

Jim and Spock are arranged to be married since they were very young, meeting every few years. And when they are soon to be married, Jim soon realizes that his feelings for Spock has grown from his childhood crush into something more.... But he's not sure Spock feels the same.

It all begins with a mis-step on an away mission... an alien parasite pushes things along for our boys.