Talk:Ultimate Shooting Star Super/@comment-25712820-20180601053556/@comment-45.56.46.26-20180720112005

In Yggdrasil, the enchantment process is carried out with data crystals that can be dropped from killed monsters (they can also be found as bonus treasure, and possibly purchased as cash items). These data crystals do not exist in the New World, so all of their enchantment processes are completely different.

Thus, the weapon that Ainz showed the Runesmiths was a Yggdrasil weapon that was created with data crystals, and the runes on it, though they looked identical to those known to Runecraft, were simply decorations. In the New World this would not be possible, as engraving the Runes would imbue magic onto the weapon, and the further application of enchantments using the New World methods would cause the Runes to distort and lose much of their effect.