Turns out it's ITC Avant Garde Extra Light. Thanks so much!

This font is being used as the episode title font preceding the chapter title in a Japanese manga series.

For a bit of history, if there's any dialogue or throwaway comment/SFX that happens to be English within a Japanese manga, it will tend to be any default font that comes prepackaged into whatever system is being used at the time due to budgetary concerns and/or convenience. It doesn't happen all the time, but it happens enough that you notice a trend.

I believe this one is a variant of Century Gothic but I can't find one thin enough to match the image; I could also be wrong. Either way, I would appreciate if any expert could chime in on this 

Hello, this is one of the SFX fonts used in the Attack on Titan series by Kodansha. Here are two additional pictures:

http://i.imgur.com/89obM75.png
http://i.imgur.com/fdgMXUg.png