Everyone is surprised at how quick Tatsuya defeated Hattori in the duel. Tatsuya begins his work as part of the Disciplinary Commitee. Meanwhile, Miyuki starts showing more mixed emotions towards her big brother.

Tatsuya and the others go after the intruders. They are informed that the intruders are in the library, and Mibu is with them. Will they be able to stop them and find out what is going on?