Gojusanbanme no Sonzai

While terrorizing people, Leangle is photographed by King, the Caucasus Undead in human guise. Kenzaki asks Aikawa to join them, but Tachibana does not trust him. King creates a website to slander the Kamen Riders and everyone seeks him out. Kenzaki encounters King but has his Blay Buckle stolen by the Scarab Undead, who can stop time. Tachibana finds Mutsuki in a bar and learns of Aikawa's true identity as the Joker Undead.