Krev Coeur was a planet that was located within the Tython system of the galaxy's Deep Core region. The planet's climate was so hot and arid that no life-forms could survive on it without protection. Krev Coeur's surface was pockmarked with inactive volcanoes and also featured a large amount of blue crystals. However, in the dry world's underground lay a vast network of caverns, lakes and jungles. Krev Coeur was colonized more than a millennium after the year 36,453 BBY by the non–Force-sensitive settlers of the planet of Tython. In 25,793 BBY, the exiled Je'daii Daegen Lok and the Force Hound Xesh traveled to Krev Coeur to acquire a crystal necessary for the construction of a Forcesaber weapon. However, their starfighter crashed on the planet's surface, forcing the two to land on the planet's surface using parachutes.
Krev Coeur was a planet with no moons that was located within the Tython system of the galaxy's Deep Core region, at galactic coordinates L-10. The world occupied the fourth orbital position around its sun Tythos. Krev Coeur had a breathable atmosphere, but it was so hot and the surface was so arid that life-forms could not survive on it without protection. The planet's surface was pockmarked with inactive volcanoes and also featured a large amount of blue crystals. In Krev Coeur's underground, however, a completely different ecosystem existed, with rain falling in a vast network of caverns and lakes. Plants that were considered to be strange and alien thrived in jungles that grew in the caves.
Daegen Lok and Xesh crash-land their starfighter on Krev Coeur
Krev Coeur was colonized more than a millennium after the year 36,453 BBY by the non–Force-sensitive settlers of Tython— the fifth planet of the Tython system— when they traveled to Tython's neighboring worlds. In 25,793 BBY, the exiled Human Je'daii Daegen Lok planned to supply the Human Force Hound Xesh with the crystalline material of Krev Coeur in order for Xesh to construct a Forcesaber weapon for Lok. To this end, Lok and Xesh traveled to the planet in a Pho-V fighter that Lok had discovered on the moon of Bogan. However, their starfighter crashed on the planet's surface, forcing Lok and Xesh to jump out of the ship. Using parachutes, the two were able to land safely in a region overgrown with crystals.
Krev Coeur was first pictured in the entry for Tython in The Holonet feature of the official website for Star Wars: The Old Republic—a 2011 massively multiplayer online roleplaying game developed by BioWare. The planet was depicted in a schematic of the Tython system. Since its establishment in 2008, The Old Republics website has gone through a number of changes, resulting in the removal of some of the features and images that were originally located there, including the aforementioned schematic. Krev Coeur's name and additional information on it were provided in Star Wars: Dawn of the Jedi 0, a preview issue of the Star Wars: Dawn of the Jedi series of comic books. The issue was published on February 1, 2012, and was written by John Ostrander and penciled by Jan Duursema. The planet was also mentioned in the first and the sixth issue of the series, and made its first in-universe appearance in the seventh issue—published on February 15, November 28 and December 19 of year 2012, respectively. The name Krev Coeur seems to be a modification of the french word "crève-cœur", that translates into "heartbreak".