JKSManga
Thanks for the chapter. maybe the itens of the shop being one time only is because the creator found a way to make store the itens in the system and to be able to call the item back he need the energy from the beast crystals? Anyway at least he will take care of the itens while he need them, Having this shadow equip is quite useful, must take a couple seconds before they manifest but it should be faster then manually equiping it.