Tetragenesis is a planet located in the Eta Sector. Once a thriving planet, its inhabitants have since been forced to live on the four artificial satallites ever since the planet was made inhospitable by a series of solar flares.
The fourth planet of the primary star Genesis, located in the Eta Sector, Tetragenesis used to be the thriving home of many sentient life forms, but a series of solar flares have recently turned it into a dead world on which nothing can live.
|Planets of Star Ocean|
|Styx - Vanguard III|
|Arakh - Fargett - Ise - Lezonia - Vendeen|
|Earth - Edifice - Energy Nede - Expel - Milokeenia - Roak|
|Klaus III - Klaus IV - Rezerb|
|Cardianon - En II - Nox Obscurus -|
|Aeos - Arcturis VIII - Eldar - Lemuris|