Slash fiction

Early on in Star Trek's history, fans speculated on the nature of the deep friendship between James T. Kirk and Spock, adding a sexual dimension to the relationship. This pairing is known as Kirk/Spock, often abbreviated to K/S. Pon farr is often used as an excuse to get the men to bed each other.

Famous K/S fan fictions include:
 * A Fragment Out Of Time
 * Alternative: Epilog to Orion
 * The Ring of Soshern
 * Shelter