Back then, on his second return to the Earth Mistake World, Reiger once used the world-class item "Heat Stone" as raw material and commissioned the forging god Hephaestos to craft a weapon tailor-made for him.
It was after Hephaestos, the god of forging, took an interest in the task and decided to add some of her own collection of materials from Heaven, combined with unmatched Divine Craftsmanship, that the weapon was finally successfully created.
However, once this weapon was brought into existence, the forging god somewhat regretted letting it come into this world.
In her words, this weapon was too dangerous, something that should not have appeared in the Lower Realm.
She even hoped Reiger would never have to use this weapon, so much so that since Reiger acquired it, he has never used it until now.
This weapon has been Reiger's greatest hidden trump card, the ace up his sleeve that he would never use lightly unless absolutely necessary.
