Why don't you have story about this durn character, he's like been important part of the story, you can make his master a side character like lucia and hana (im sure his master is girl) and after you get to know her, you'll get to know durn as well,
And maybe at some point during their conversation, either MC or durn gonna mention about ren (ashley slave), and you can include this gang character the one you got quest to deliver his package
Make something like this, this gang have illegal slave they sell, and durn is from them, and this is where durn got to meet ren (ashley slave), make something like maybe after sometime ren working for
The goverment, she remember about ashley and abandon her duty, and after wondering around on the street, she got captured by the gang, and you can buy her as a side character, and this is where the choice to deliver the package to the gang or report it to the police become important,
Like if you deliver the package, you'll get discount for ren, or if you report the package to the police. The gang member gonna ask you another favor for them,
well thats about it, im just giving you a suggestion, is up to you, want to use it or not