We are the strongest!!! "The Red Oath" heads to the demon tribe's village. And there, we encounter a being that knows everything! Mile, who has been reincarnated into another world, aims to be an ordinary, average girl while being careful not to become an S-rank hunter. She helps princesses and battles ancient dragons!? The four girls of "The Red Oath" ride on an ancient dragon to the demon tribe's village! With this, they will fully complete all races♪ There’s an unexpected reunion with Reina and, moreover, a small girl known as the "Divine Child" among the demons!? As they prepare for a crisis while saving her and helping an orphanage, a being that knows everything (Slow Walker) appears before Mile and her friends... The popular series is about to reach its climax!