"Security's Perfect Encirclement!!" is the fifty-sixth episode of the Yu-Gi-Oh! ARC-V anime. It first aired in Japan on May 17, 2015.
Yuya and the Lancers have entered the Synchro Dimension, however, he realizes that only Silvio, Selena and Reira are around him. Almost immediately, they are surrounded by Security, thinking Yuya and Selena are Yugo and Yuzu! While casting a scornful eye at a hesitant and bewildered Yuya, Silvio and Selena begin a Duel against Security! When Yuya and Selena turn the odds against their opponents, more Security appears. Then, however, the sky turns dark...!