Hoshigakure
Original Hoshi Gakure
The original Hoshi Gakure is a small town with little influence.
There was a filler episode about a "star" which they are named after, and with constant training most excelled in their proficiency, but also there were severe casualties to the hazardous nature of the meteorite they used.
Hoshi Gakure in SL
The concept is different as it has another purpose and is only reachable after achieving Sannin Level.