The Danger Within Enhances

The Danger Within Enchances (危険はより強くなるKiken wa Yori Tsuyoku Naru) is the 6th episode of Kamen Rider Build (Reboot). It shows the brief appearance of Evol Rabbit and the debut of KeyDragon Hazard Form.

Synopsis
Kuro/Ryu faces off the Riders! Kiken uses the Dragon and Lock Fullbottles, and gains a new form!. But Kuro finds a solution...