Furin High was a place where it was every individual for themselves. The students formed groups that competed for supremacy, not just among themselves but also against rival schools. However, on April 7th, five students—Hajime Umemiya, Toma Hiragi, Tasuku Tsubakino, Takumi Momose, and Saku Mizuki—who shared the same goals enrolled at the school. They took on every faction at Furin High, transforming their adversaries into allies, ultimately unifying the school and pledging to safeguard the city from dangers. They subsequently renamed it Bofurin.

On the other hand, Endo Yamato was a legend among his classmates. As a first-year student, he established a faction of fierce delinquents. However, unlike Umemiya and his team, Endo took a different approach. While Umemiya gradually expanded his reach and gathered supporters to defend the city, Endo chose to keep his group small yet powerful, calling it "Noroshi."

The newly formed "Bofurin" never managed to defeat Noroshi, as the group simply left Furin when Umemiya's influence began to rise. Each member was free to pursue their own paths...

Endo Yamato was making his way back after a confrontation with a Bofurin member. He was leaving the city, opting for a life away from Furin High. But you happen to be in his way.