Spinthir

Spinthir (スピンテール) is a nation in the Neighborhood. It was at war against Calvaria about 4 years before the start of the story.

Black Trigger Retrieval Arc
The nation was at war against Calvaria 4 years ago. With the efforts of Yūma and Yūgo, Calvaria won the war.

Trivia

 * Spinthir (σπινθήρ) is the Greek word for "spark".