After Eisen finished changing CF-1's body into a version that could be used during the Dark-Elemental mana retrieval, the old man continued and started working on something else that he would be using for it.
"Alright, I have a few Dark Elemental Gems here…" The old man muttered to himself, and Stahl and Komer, who had chosen to stay and watch for a while, looked at the old man in surprise.
"Why do you need those?" Komer then asked curiously, before Eisen turned around and grabbed some mana crystals. "Well, I'm going to make a mana crystal that can properly conduct Dark-Elemental Mana, and then turn that into Magic String, and then attach that to the enchantment that you two made. And also, I'll be using them to make proper Elemental Mana Batteries, like you also did with the other batteries." Eisen explained, so Komer nodded his head in understanding.
