Master and Apprentice

'Arcane Technology? Isn't that the same as Lost Technology? So, they were aware of its real name... Anyway, this looks like a highly advanced product of science and technology for me rather than equipment made of magic.' 

Wallace thought after hearing Slaine explaining the origin of the machine. He had only learned that the Lost Technology that Aeolia was also curious about was called Arcane Technology because of the Pathfinder's reward.

He has this Optical Phenomena Manipulation technology that was still not being used. Of course, he already had some plans for it but it's not yet necessary at this point. He was first trying to accomplish all the immediate goals he needed to step forward in his main plan.

He was tempted to send out his Divine Sense but he won't be able to explain how did he learn the Soul Art if ever his master felt it and asked him about it.