Traditional Japanese Music group Zangetsu (斬月) forms in Tokyo (東京)東京. (※ Note:) It seems as if Zangetsu had no fixed lineup, but it revolved around members who would join Crow×Class, and was led by Kanade, with Kurona being a regular member, and Mikage and Shion being recurring members. The earliest reference to Zangetsu is from 2010.
Crow×Class forms out of Zangetsu (斬月)
At some point, Ren changes his name to Mikage (影)
V. Kurona (黒流) / Support N. Kanade (奏) / Support K. Ren (連) / Support K. Hibiki (響) / K. Shion (紫音) / T. Saku (炸)
V. Kurona (黒流) / Support N. Kanade (奏) / Support K. Mikage (影) / Support K. Hibiki (響) / K. Shion (紫音) / T. Saku (炸)
At some point after the upload of the Gekkocho PV, Shakuhachi player Hibiki (響) leaves
V. Kurona (黒流) / Support N. Kanade (奏) / Support K. Mikage (影) / K. Shion (紫音) / T. Saku (炸)
Crow×Class has it's last known live show. By now, it's best to assume they've disbanded, as vocalist Kurona and Shakuhachi-player Hibiki have, for the most part, switched to Wagakki BAND (和楽器バンド)
Crow×Class (Crow×Class~黒鴉組~) was a visual kei band in Tokyo. They were part of the wafuu subgenre. They were active until 2015 and are now disbanded.