Good Guy Black Mage (serious discussion)

The whole

good-guy-deciding-to-become-the-ultimate-evil-to-unify-everyone-in-good is literally the fantasy equivalent to

-snip-

Yeah it's not exactly a very interesting creative trope, kind of like yelling, "PSYKE!" or Pee Wee Herman's "I meant to do that." A similar form to a "Deus Ex Machina" magically undoing some horrible event simply because the author wasn't creative enough to think of any way out of hole they wrote their characters into... but it's generally what I would expect from Nexon... story wise anyway. Most of their stories all have very simple, childish plot twists that are real easy to guess.