High School DxD - The Untold Story of the Dress Break's Birth?

Seizoen: 0 - Aflevering: 5 / 5 - Eerst uitgezonden: 27 juni 2012 - Episode ID: 1117439

A few flashbacks of how Issei first found out and eventually perfected his special move, Dress Break. The episode closes with him testing the move on the two most powerful Devils he knows: Rias and Akeno, much to the former's dismay.