A long time ago a girl named Ais sat all alone. Her face was tear covered, and there were no other humans in sight. This was the day that she had lost everything. This was the day she would cut her emotions off. Her parents were killed by an awful monster leaving her an orphan. Long has she given up hope that heros do exist. Despite the faraway wish of being swept off her feet, she now lives her life with one purpose. And that purpose is revenge Things take a turn as a peculiar "Rabbit" begins to make her feel emotions she had long forgone. She remembers her desire for a hero, her desire to be happy, and her desire for love. And she hates it. This is a story of love, regret, rejection, and hope. Ais runs away from someone who will never stop running after her. Will she be overcome by revenge, or can Bell be her hero?

Following the events of Danmachi Light Novel 18, Bell is walking through Orario, trying to clear his mind. Bell is a level 5 but soon will realize that he needs to get far stronger.