Folca felt like crying but had no tears.
'Then why did you show it to me? Are you a sadistic or something? Is it funny to see others suffering?'
Of course, he only thought it in his mind. He decided that since his Clan got the formula to make Steel, he might use it to research new weapons. Perhaps Rean's Spiritual Kaz Sword was made based on the Steel crafting process.
He wasn't completely wrong since Rean's Steel was made based on his knowledge as a metallurgist back on earth. However, the main secret behind his Spiritual Kaz Sword was not present in the Steel Weapons, which was how to transform a Spiritual Metal into an Element Gathering One.