This is the first out of three gaidens (side stories) that were released after Takahashi Hiroshi finished his famous delinquent manga Crows. It focuses on the pasts of the Ebizuka trio (Mako, Pon & Hiromi), Bandou Hideto and Bouya Harumichi in a total of 3 chapters. It takes place when all of them were still in middle school.