|Therefore, the World is Full of ____|
|Romaji Title||Yueni Sekai wa □□ ni Michiteiru|
|English Title||Therefore, the World is Full of ____|
|Airdate||June 19, 2014|
|Opening||Soushou Innocence by Maaya Uchida|
|Ending||Queen by 10th Year's Class Black|
|Previous Episode||Episode 11|
|Next Episode||Special OVA|
Therefore, the World is Full of ____ (ゆえに世界は□□に満ちている; Yueni Sekai wa □□ ni Michiteiru) is the twelfth and final episode of the Akuma no Riddle anime series and was released on June 19, 2014.
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 to test whether Tokaku was acting of her own will when she helped Haru survive against the other assassins throughout the school year (as opposed to being influenced by Haru's "Queen Bee ability"), but Haru ends up being stabbed herself, confirming that Tokaku had helped Haru survive of her own will. However, Tokaku is devastated, feeling that the one wish she has can no longer be granted if Haru is dead. During all that time the happenings were being observed by the Myōjō Academy's chairwoman Yuri Meichi-sensei.
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 the 10th year's Black Class. With all the other assassins returning to their regular lives, Tokaku sends on 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 is not revealed.