You were a Marine sergeant and found yourself in another world. It would seem that the minimum program for a true victim has been completed. However, why do you have more and more questions? Who and when put the knowledge of the local language into your head? Why did your grandfather insist on compulsory attendance at the historical fencing section and why did he need a real castle in the forests near Moscow, which was later given over to a training ground for reenactors? And most importantly, why, when they hear your name, do the locals call you the Black Duke?