@Tired_Man and
@Tomas28 , I believe Luxion is angry because of what the other AI sent him. The other AI was lying dormant and probably has a lot of knowledge about the facility and was around when humans created the facility. Therefore, the other AI saw the collapse of humanity, its creator, and the elves doing their human hating things. Luxion learnt about this, and he already has a hatred for the "new humans" for their magic, which is also used by the elves, which reached its boiling point when he learnt some new stuff from the other AI.
Of course, this is just a theory. A MANGA THEORY! Thanks for reading.