Dogs Vol. 6 (manga)

With the city still reeling in the aftermath of the cataclysm, Giovanni makes his move and goes after the director. But the outcome of the confrontation is not at all what he expected. The director himself has deep ties to the underground research facility that Giovanni and Heine were raised in, where they were forced to fight over and over again in Einstürzende's hellish experiments. Finally the full story emerges of what happened in that killing field so many years ago.