Faced with the overwhelming information in front of him, Kane was a bit baffled, but he quickly began to sort out his thoughts.
In this situation, the first guess that popped into Kane's mind was that it was similar to the situation with Kallen and the others.
The issue was why it happened after these soldiers were upgraded, and Kallen and the others were recruited from the highest-ranking units at the wilderness camp.
The previous soldiers were of the lowest rank, and after upgrading to intermediate rank units, they immediately bonded with Kane and instantly turned into Spirits of Freedom.
This clearly meant that the previous soldiers had not met certain conditions, namely their rank was insufficient.
The manifestation of low-ranking units lies in the fact that they were created, perhaps when they were created, their life essence was insufficient, and subsequent upgrades involved excavating their talents and enhancing their life essence, which were known from Kallen.
