The Togetherness Thing (слэш)

When Lieutenant Sulu and Ensign Chekov both contract a mysterious ailment, Captain Kirk and the rest of the Enterprise's crew must rush to a system of planets that may hold the cure.
OR, Jim Kirk has to deal with the fallout when Sulu and Chekov stop being best friends and basically suck all of the metaphorical sunshine off the Enterprise. And on top of that, it turns out Jim might not be as awesome at hiding his secret relationship with Spock as he thinks.