After the destruction of their home planet, Blue Cop and his partner (Y/n) has no choice but to take refugee on a planet called, Earth. They meet Jun, who is now the wielder of the Metal Breath and together, they sought to build a relationship between both humanity and metal cardbots. Will they succeed or fail? No one knows. [ METAL CARDBOTS X READER ] [ BLUE COP X READER X VARIOUS] [ AFAB READER ] [ NOTE ] This series is based on a korean TV show called Metal Cardbots.