Worst

Serialized in the magazine Monthly Shonen Champion from 2001 to 2013. Not properly a sequel but it shares the same setting and some characters of the author’s previous work, Crows

Hana Tsukishima is a country boy who recently moved to city. He is a good guy, ingenuous and honest, but he is also very strong. His goal is to become the leader of Suzuran High. He and his friends encounter and fight many other gangs and rival schools, led by clan-logic and strength hierarchy.

Great success, mostly in Japan with over tens of million copies in circulation and many spin-offs.

From the same author of Crows.