The 53rd Being - S14.E31

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 true identity as the Joker Undead. Kenzaki retrieves his Blay Buckle, but Aikawa is abducted by the two other Undead. Kenzaki then encounters Trial D, an Undead that cannot be sealed.