User blog comment:Miskos3/Fairy Tail Chapter 380: Hell's Core, Review/@comment-1359322-20140411162725/@comment-7418318-20140411170853

I wouldn't like for E.N.D. to let them run just for the hell of it. Unless there is a deeper and more meaningful reason for letting them go intentionally, I prefer for FT to escape in spite of the Demons trying to prevent it.

For example during the massive battle against E.N.D. the engine/lacrima/being/whatever that keeps the Cube floating could be knocked out and FT, after already being defeated, still manages to slip away in the commotion of the crash-landing.

If Zeref turns up and orders Tartaros to let them go for example, I wouldn't be upset. But with the Demons being all sadistic, homicidal and stuff, them just letting FT run would suck big time.