Witness Heisei Kamen Rider in the New Century

After the birth of Decade, the old decades of Heisei were unified into one world. In this world, there is a policeman who inherited the name "Tachibana" and fights as the backing of the knights, witnessing the glory of the old Heisei era. "Come on, knight." "Fight, police." (The protagonist is a non-traveler, aboriginal, and is mainly positioned as logistical support. He is Tachibana's father in the Heisei era. Those who are familiar with Showa Kamen Rider should know this character. He can transform, but he is not a fixed transformer)