Prologue [Erwin X Levi]

The wavering lightbulb emits a sputtering noise, as it intermittently fades and brightens, appearing uncertain of its destiny or maybe reluctant to surrender to its perilous situation. As if it were averse to the notion of morality and ultimate demise- to its very own abrupt incapacity to manifest radiance.Erwin remained motionless, his gaze fixated on a moth as it gracefully fluttered around the glowing bulb. Once the final rays of light flicker from this bulb, the tiny insect would be plunged into a world of eternal darkness. Without the guiding light to navigate by, it is doomed to wander aimlessly, suffering in the shadows until it can find another source of illumination. But even that light will eventually fade, leaving the insect lost once again in the endless night.

or Marleyan Erwin meets Paradisian Levi during the Declaration of War (and Erwin doesn't remember the life he led as a Paradisian, Commander of the Survey Corps)