The Lulu Tribe and Tata Tribe are the two strongest tribes in the Barbarian region.
Apart from these two tribes, the other medium and small tribes are like rotten fish and shrimp, not worth mentioning.
However, at Otto's request, Ann Tata and Cal Lulu began swiftly launching attacks on these medium and small tribes.
When they learned that the two largest tribes had begun recruiting outsiders, those struggling medium and small tribes didn't resist. Instead, they happily joined on their own initiative.
The unification of the barbarian region, which had not been accomplished for hundreds of years, was finally achieved under the intervention of an outsider, the Silver Dragon.
The feelings of Ann Tata and Cal Lulu, as the parties involved, were very complicated.
Otto did not merge the Lulu Tribe and Tata Tribe. At his request, these two tribes operated separately.
Or, it seemed a bit like they were competing with each other.