[X]Memories: Long, long ago, you asked your first students to forge you a rifle. To make a better, cheaper, less wastefully precise replacement for the assassins' great sniper rifles. When they presented you with the first prototype, you laughed and told them it would not do - too expensive, too precise, too capable to be mass-produced. When they gave you a familiar-looking gift a year later as you went to war, you laughed. Your first student's name and her oath of apprenticeship is etched on the bolt, and your second student signed the barrel. Your students may have failed their initial task, but they gave you a long rifle with which you would later kill a Space Marine.
[X]Grief: Your closest friend forged you a blade, and you killed him with it. Before is a gleaming power-blade, a twinned knife hung at its side, both of them signed by their maker and victim. He was your shield and you were his sight in the underhive tunnels all those years ago, and you failed him. You were a jammer, a sensor, a fast-moving terror in the underhive dark, and he was the iron fist that backed you up, armored and armed in plate and plasma. When he fought, you were at his side. When he fell, you were at his back. And when he turned his coat, you killed him. He always joked that you were too quick to raise your blade.