When the gunshot rang out, Eiko's ears perked up, like a dog hearing a sound far away, or like a wolf hearing it's prey; Eiko silently began leaving the bridge, she didn't bother telling where she was going, she felt that the captain would notice she was gone sooner or later; Eiko passed by the shy boy, before going off to investigate the gunshot that she heard earlier, the moment she felt she found where the sound came from she saw the majin once again, along with two others that were taller than her in armor. 

Eiko watched the group before they left heading for the bridge, when they were gone, Eiko investigated the area. She noticed the body, the bullet casing, and the weapon, she took the weapon from the dead man's hands and checked the gun's magazine, she noticed that one of the bullets were spent." I guess he wasn't experienced. Rule one of gun safety is to clean your weapon with the safety on. I rather not clean this up." Eiko put the gun back into the guy's hands. She counted herself lucky she was wearing gloves, because she didn't want to be blamed for the death of the crew member, as she turned around going back to patrolling the ship she spoke to nobody in particular." One dead before we could even do this mission. That's a new record."