I Became a Leader of a New Nation while in Exile

It was supposed to be a new, quiet, and simple life for 15-year-old noble boy Nate Wole, who was kicked out and exiled by his family for being too weak in favor of his older brother, Hertzel, a selfish warrior who cares only about himself and his skills in magic.
Desperate, he traveled to the lowlands of Wooda, where while camping, he had an unlucky encounter with one of the collection of tribes of the Undead Animals, a bunch of hostile undead animals who can wield weapons and shapeshift into humans and were despised and hunted by humans.
After getting killed by one of them under an Undead lion named Sati, Nate was saved by them after they regretted their decision to kill him, and Sati eventually gave his position as tribal leader to him. Nate was shocked to here that, but he has no choice but to accept it.
And now, he is a leader of Sati’s lion tribe. Soon, he united the other Undead tribes under the new country name, Wooda, while studying to be a good leader, and changed his identity to Lloyd Lewole, completely vanishing his old identity in order to forget his past. But, will he handle such a great responsibility?