Keith could have gone about this and gotten a better outcome in hundreds of other ways, but this was what he decided to do.
He decided to wear a cloak and mask and threatened to shut down the business. If not, he would start destroying things and making a fuss.
That would cause this place to lose customers, and he would be successful in achieving his goal.
However, there was one problem with this setup: it was not to get caught by anyone and to have them track him and his background down.
There were quite a few people back home that Keith cared about, and he was not about to die here and leave them all to face the world on their own.
"Well, If I die, I will die freeing all the people who have been held captive. That was what I vowed to myself when I first picked up a weapon."
Once he had everything ready, Keith quickly approached the shop and smashed the door with his sword embedded in a rock.