Arriving in the World of Blade, Tsukasa assumed the disguise of the Chief Waiter of the BOARD Corporation, an organization whose agents become Kamen Riders to battle the Undead. When the Elephant Undead gone on the attack, Sakuya Hishigata battled the Undead as Kamen Rider Garren as Kazuma Kendate arrived and transformed into Kamen Rider Blade. When the Capricorn Undead joined the fray, Tsukasa joined the fight, dispatching the Elephant Undead using Ryuki's powers. Afterwards, Natsumi and Yusuke met BOARD's president Hajime Shijo, who decided to promote Tsukasa to the rank of King while Kazuma Kendate was demoted from Ace to 7 and Mutsuki Kuroba is promoted from King to Ace, thereby becoming Kamen Rider Leangle. As a result, he was forced to work under Tsukasa in the cafeteria. When he is