Ganjitsu (Veqlargh) was a Federation planet. Ganjitsu's location near the Klingon Neutral Zone meant that a constant Starfleet presence was needed in the region, which throughout the mid 23rd century was led by the USS Aerfen.

In the 2240s, Hikaru Sulu and his family lived in the city of Ishikawa. (TOS novel: Enterprise: The First Adventure) In 2248 the Albino led a raid on the planet. He was stopped by Hikaru Sulu. (ST novel: Excelsior: Forged in Fire)