Let's go?

Lenalee has obviously been through too much of this 'you'll never return' bullcrap in the past to take it seriously. I bet she took on those types of towns when she was six. Allen, on the other hand, has not been desensitized to this yet. The Order's going to have to work on that…

No, really, in the anime Komui gives them an ominous warning and Lenalee agrees to it way too fast. No hesitation.