The idea that these items are components in smithing is probably closer to the mark, than being quest items..
Everyone thought the Shaded items that drop in Maidens Eye and Akheva were pretty much destroy fodder, then after a lot of perseverance, the community at EQ Traders found the recipe to make them into tailored Shaded Hide Armour, so it's not too difficult to assume the Shojen gear is for making smithed gear in a similar fashion.