The Space station known as K7 features in Star Trek the original series, The Trouble with Tribbles before being revisited (in the same TOS setting) by Deep Space Nine. So let's take a look at this one time important space station and its lore. From history to it's time in the Klingon War as well as a schematic overview, let's explore it! And Sherman's Planet too because it's nearby, why not?

STAR TREK® Online developed by Cryptic Studios and Perfect World.
STAR TREK® and its trademarks (including Picard/Strange New Worlds/Lower Decks/Enterprise/Voyager/Deep Space Nine/Discovery and The Next Generation) are all owned by © Paramount Global Pictures/CBS Studios Inc. and distributed by CBS and Paramount Plus.
This Video is for critical purposes with commentary.

Outro Animation made by @icarogabriel17