User blog comment:Woest/The Light and Darkness of the Guild/@comment-7418318-20140316091038/@comment-24066070-20140316104605

Maybe Lumen Histoire is the result of Zeref starting to care for human lives, rather than the reason.

He created loads of magic while he was "evil", so why wouldn't he create some more magic and books after becoming "good"? He may be able to create demons with specific purposes.Demons like those of Tartarus were created by the "evil" Zeref in order to cause destruction, but after learning the value of life he made some other Demons or even other species with the purpose of stopping/killing himself.

Perhaps he no longer wanted to create Demons and subsequently created a Fairy. This Fairy is Mavis and her sole purpose for existence is to kill Zeref, as this was the order Zeref ingrained in her book and her book would be Lumen Histoire. Zeref comming to understand the meaning of life may be due to him gaining an understanding of the "feelings" of others and Mavis seems to value "feelings" a lot, what if Mavis' reasoning for friendship is actually imbued in her by Zeref?

It was shown that demons like Deliora leave a corpse, so this may explain why Mavis has a grave. As for her Spirit, it can likely linger around since her book, Lumen Histoire, still exists. The reason Lumen Histoire is sealed, is in order to protect Mavis from Zeref's other creations like Tartarus. Since they would be polar opposites to Mavis, while at the same time sharing the same creator, it seems normal they would be hunting her down. Kyouka stated they wanted to be accepted by Zeref, perhaps they are jealous of Mavis. It could be her original body was killed by E.N.D.

When Makarov said that LH contains what Mavis wrote about the true nature of the Guild, maybe this means Mavis entrusted her allies and the next generations with the task of stopping Zeref. Since it was her reason for existing in the first place, this seems normal.

Mavis may have used her own emblem as the design for the Guild Mark, thereby automatically blessing any member with whatever benefit LH has and also allowing them to see her spirit. Since the Guild Mark was already shown to be linked with the Tenrou Tree, this doesn't sound illogical either.

I think Precht stated that Zeref was enlightened on a remote island and created many demons, perhaps this island he mentioned isn't just a detail, but rather refers to Tenroujima. It could be the island has some special properties which allow Zeref to create life. This could mean that both the Demons and Mavis were created on Tenroujima. Since the island was special for both Mavis and Zeref, this may explain why Mavis is buried there and Zeref chose that specific island to hide.

But I would still prefer if Mavis rigged a Book of Zeref, rather than her being his creation. Oh well, time will tell.