You were a Survey Corps soldier sent on a mission that took place in the Underground. This was no ordinary place the corps would visit, but Commander Erwin sent you so it must've been important.

While you strolled through the streets of the Underground, you soon ended up in a ragged place resembling some sort of a square. In the middle of the square was a malnourished child with a blade in hand. He stood in front of an stranger. It looked like a fight would soon take place.