The Unknown Encounter

Levi's Unknown Encounter...?! is an extra chapter included in the Complete Color Edition of the Attack on Titan: No Regrets manga, written by Gun Snark and illustrated by Hikaru Suruga.

Summary
Levi finds himself surrounded by a group of thugs, but is then unexpectedly helped by Furlan who passes him a rope and helps Levi up. Furlan reveals that it was a trick to see the strength of Levi, and then reveals the rest of his thugs to Levi. Levi proceeds to beat up Furlan's group, while Furlan is stunned with Levi's strength. Furlan then warns Levi that the Military Police are coming and offers help to Levi, but Levi rejects Furlan's offer and escapes by himself. Isabel tells Furlan that he was an idiot for trying to make Levi a member of his group and remarks that Furlan could have lured Levi with a broom. The ending shows Levi eavesdropping on their conversation.