It seems all the plot up to now comes home to roost.
Episode 13: もう一人の王 – Mō Hitori no Ō
Yuga drew Sevens Road Magician. But just when he thought that he was going to lose because of an illegal card, Otis emerged from the ground! How did Yuga obtain Sevens Road? And just who is Otis?!
Odo Yuga: Ishibashi Hiiro
Kamijo Tatsuhisa (Rook): Yashiro Taku
Sogetsu Gakuto: Hanae Natsuki
Kaizo: Kobayashi Yusuke
Kirishima Roa: Furuta Kazuki
Kirishima Romin: Kusunoki Tomori
Taira Getta: Miura Rei
Atachi Mimi: Suzuki Rio
Subordinate: Kumagai Kentaro
Otis: Namikawa Daisuke
Oomori Menzaburo: Nagumo Daisuke
Maki Sushiko: Uchiyama Mari
Ranze: Kamakura Yuna
Rinnosuke: Kobayashi Chiaki
Atachi Yoshio: Nagatsuka Takuma
Hakubutsu Kan: Sakakihara Yuki
Hotta Kaseki: Suzuki Ryota
Goto Hanto: Mastuda Risae
Shinjitsu Bakuro: Yamamoto Tomoya
Script: 竹内利光 || Takeuchi Toshimitsu
NOTE: Otis has the same VA as Hologram Man.