User blog comment:IamJakuhoRaikoben/Chapter 400: Wings of Hope, Review./@comment-24066070-20140913200114

Igneel better have a good explanation for this.

He's inside all along, he can seemingly come out when he wants to, he was previously shown in a volcanic area...

Aside from the fact that Igneel being inside Natsu seems rather cliché after reading Naruto (Jinchuuriki) and Bleach (Inner Hollow), there doesn't seem to be any reason for the long-lost Dragon to hide "inside" Natsu.

Igneel didn't even bother showing up when Atlas Flame & pals were strolling around Crocus, nor did he attack Acnologia on Tenrou.

There is quite a high possibility of Igneel's long-awaited return to turn (extremely) lame if this isn't handled well.

Needless to say, I didn't like the chapter.