Perhaps it's the otherworlders who have been spreading stories about their own worlds. If that's the case, then those unanswered questions may have found their answers. However, for now, whether otherworlders are still present in their worlds or not isn't something she needs to dwell on. As long as they aren't posing a threat to the people of Earth, it's sufficient.
But if these are merely her theories, then there's no harm done since they're just passing thoughts.
"Sister! Can you also help me contract a divine tiger or something similar as my spirit beast?" Keith excitedly asked. Just as Kisha had anticipated, Keith had grasped most of it. Though he was unaware of Kisha's system, he now understood that she had the means to acquire things from beyond Earth, including the magical creatures he had only read about in novels.