On summer nights in the northern hemisphere, the air is a little less hot and a little cooler. Under the blue moonlight, two tiny figures shuttled through the alleys of the city... The black cat chasing closely jumped to block the other's path. The white cat being chased stopped, its purple eyes projecting a confused look. The black cat attacked in an instant, with a trace of blood, and the white cat was caught in the face. Just when it was about to fight back, the black cat's golden eyes flashed, and a bolt of lightning cut through the clear night sky and hit the white cat directly... Looking at the injured opponent, the black cat raised its front paws. Suddenly its ears stood up, turned around, jumped, and disappeared into the night...