Kaishin (界神, Kaishin) is the original home planet of all Shinjin. The planet is a "large version of a Kai Planet" (something like a larger version of King Kai's planet). The population of Kaishin is roughly 80.
On Kaishin, there are gigantic trees called the Kaiju. These trees sprout beings called Shinjin from magical fruits. These Shinjin can possibly take the role of a Kai if incredibly lucky or if born from special golden fruit, in which case they then become Supreme Kai. The evil Shinjin born on Kaishin are cast into the Demon Realm located at the very tip of the universe, which is ruled by Makaioshin, to be kept separate from civilization, and they live with the Makaio.
Note: Most Shinjin shown in the series were all Kais at the time of their appearances, thus all left their home world ages ago.
- East Supreme Kai
- South Supreme Kai
- West Supreme Kai
- North Supreme Kai
- Grand Supreme Kai
- Old Kai
- Universe 6 Supreme Kai
- Supreme Kai of Time
|Planets||Grand Kai's planet • King Kai's planet • Kaishin • Sacred World of the Kai • Heaven|
|Locations||Cave of the Ancients • Check-In Station • Demon Realm • Freezing Tundra of Hell • Furnace of Eight Divisions • Grand Kai's mansion • Hell • Princess Snake's palace • Other World Stadium • Sugoroku Space • Yemma Forest|
|Roads||Battlefield Royale • Snake Way|