While Asta and the other Black Bulls were fighting with Fana, Fanzell was facing off with the forces of the Diamond Kingdom, which he used to be a part of. The forces happen to be led by two of Fanzell's former students, Ladros and Mars. Fanzell left the Diamond Kingdom because he didn't agree with the kingdom's methods, but before, he would train children on how to use their powers for the Diamond Kingdom. Fanzell tries to reason with his former students, but Ladros attacks regardlessly, forcing Fanzell to fight with them.

Working alongside Mars, Asta is able to stop Fana from self-destructing. Fana regains her senses and they ask her what happened. However, Fana doesn't remember the events that happened after she had lost consciousness, other than she felt the strong need to take back the magic stones and that she was being controlled by someone's extreme hatred. Meanwhile, Ladros, who they thought they'd defeated, comes back even stronger and attacks them. The attack was so sudden that everyone didn't have time to react. Asta tries to face Ladros alone, and...