Canossa

Canossa is a guild in Elder Tale.

Overview
Canossa is one of the PK guilds that gained notoriety around Akihabara after the Catastrophe. They ambushed players around Akihabara in order to loot the items and gold they drop after their deaths.

Log Horizon: People of the West Wind
Canossa, like Hamelin and Blue Impact, was a PK guild that killed Players at Magus' behest in exchange for EXP Pots. Their notoriety gained them the hate of Soujiro Seta, guild master of West Wind Brigade. After "persuading" Black Sword Knights' guild master Isaac to assist him in killing the PKers, the members of West Wind Brigade lure Canossa and Blue Impact into a spot so Soujiro and Isaac could kill them. What happens to them afterwards is unknown.