Now full-fledged Hunters, Mile, Reina, Mavis and Pauline form the "Crimson Vow." That said, they're still just novices, so they work some questionable side-jobs while steadily gaining experience through straight-foward quests. One day, while on a quest as guards, they are attacked by bandits. The bandits think they'll have an easy time of things, but Reina's acting strangely...

Now that they each know the burdens of each other's pasts, the Crimson Vow has only grown closer. Their job guarding has come to a successful close and they have a moment to enjoy a brief rest, but sudden bad news brings the smoldering embers of Reina's resentment roaring back to life. How will Mile and the others face this first threat to the Crimson Vow? Their friendship is about to be tested...

Someone once said that to be alone is to be indifferent to one's surroundings... Preposterous! When you're alone, because you're alone, you are more sensitive to your surroundings than anyone else. That is why Mile, with a long history of alone-ness, notices. She has noticed. And she wonders, "could it be that everyone's avoiding me?!" Mile fears the looming threat of being alone again. What are Reina and the others' true intentions?