[NoOneKnowS]

Originally Posted by Neki Ecko

Yep, I think when she get her innocence, when her long hair will grow back, but that comes up of a theory that I came up with, for the rest of the series.

Spoiler for Theory:

So if Lenalee gets her innocence back and she has the "Heart" that the Earl and Clan of Noah wants, I think that the Earl would try to bring her on his side or control her by some means but she would sumbit to him and Allen would have to fight her.

Well; I don't think the earl would do that. To him; any innocence is an eyesore and needs to be destroyed. We don't even know what exactly does the heart do. But I do have an speculation on my own regarding about it.

To me the heart functions as what it literally means; meaning is serves as the "heart" to all innocence; all the other innocence would serve as like the other human body parts or etc...Like if ever the heart is destroyed; then it's game over for the exorcist. But I don't think just cause it's called the "heart" innocence; it's automatically the strongest one out there. Allen and the General Cross' innocence are far more better in a battle; just like Lavis "AoE" type spells. But of course like I said; We don't know yet what the heart can do.