After killing the two people, Jack did not change his strategy at all. But instead, he went ahead and began increasing his strength. Not only his, but even Celine's and the rest of the group's.
By the time that one week went by, leaving Jack with only 23 days for him to be able to conquer the named stronghold, Devin Stronghold, Jack had finally completed his time to stay inside this small stronghold.
At this point, although the organization that he had created was not even named, or maybe it was not even created, but he was the well-known super power within the entire Stronghold.
All the big businesses within this small Stronghold were owned by him. And for that reason, he received a lot of respect. At the end of the day, although it seemed that everything had passed peacefully, in reality, there were several people with several plans of getting the methods that were used for crafting the communication device and the formula for creating the cell invigorant syrup.
