User blog comment:IamJakuhoRaikoben/Chapter 450: Alone in all the World, Review./@comment-5268982-20150831083317

What we learned from this chapter:
 * In a sense both Precht and Layla were right. One Magic is relevant to both love, but also darkness.
 * It's not that Zeref has an on-and-off switch between being a decent guy and being a sociopathic prick. He's just both at the same time because he's insane ;D
 * Precht may have had other motives for looking for Zeref, other than being power-hungry. Looking for Mavis, for example. Of course I can't base this on anything but it's a thought I had while reading the chapter.
 * That said, we'll definitely see Precht again so maybe we'll find out his motives, since he has to become the second Master, and also because he is probably involved with Lumen Histoire and trapping Mavis into that crystal. That would explain why he is looking for the depths of darkness and why Ivan also called LH "the guild's darkness". At the same time, Mavis probably thinks of this as the guild's "light". Maybe Zeref absorbed the curse to himself, so only light is left for Mavis' body? I don't know, the more I think about it the more confusing it gets.
 * Zeref and Mavis is canon. I definitely did not expect this... and I can't say I like it much either ( ._.)