Because Chuangqi needs Axide's power to save two parallel worlds.
Kamen Rider diagram
20 16, due to the weirdo Bugster = unknown computer game virus erosion began. In order to help infected people, Emu Hōjō, a talented player who decided to fight Bugster, became a masked knight first aid.
Knights of various game types appear at the beginning of the game and play many games skillfully. Let's eradicate Bugster with the slogan "No, go on" and change our destiny.