Therefore, the World is Full of ____

As Tokaku begins her attack, Haru is suddenly dragged off by another Tokaku, who claims the other Tokaku is actually Nio using hypnotic suggestions to take on her appearance. The two Tokakus soon battle against each other with the real Tokaku managing to overcome her fake and stab her. Haru then charges against Tokaku, but ends up becoming stabbed herself, leaving Tokaku devastated, feeling the one wish she has can no longer be granted. As the end of the school year comes, it is revealed that both Haru and Nio had survived their attacks, with Haru becoming the sole graduate of Class Black. With all the other assassins returning to their regular lives, Tokaku sends one last reply to Kaiba before joining Haru in delivering everyone's diplomas.

After the credits, Kaiba receives a text message and smiles, though the content of the message is not revealed.

Next episode

S01E13 - Who's the Winner? (Surprise Test)