As soon as the three puppets appeared, they slammed into the three people, knocking them away. Two of them flew toward the barrier uncontrollably and surprisingly slipped right past the barrier without encountering any difficulty.
The barrier either didn't allow people from only entering, or had no problems with people leaving it. Or, these two had some sort of tokens that let them go in and out of the barrier without being stopped.
The other four that were flying outside quickly caught the two that were tossed outside, but those were already knocked out, some of their bones surely broken by the impact.
Whisker had the puppets grab the last person who slid across the ground close to the barrier and drag them back. The man who had remained inside was very clearly knocked out, maybe even was already close to death.
Even a simple attack by something that was used by Immortals to train against was not something so simple.