Ambition of the Slimes

"The world was about to be ruined. A brutal family called the “human” appeared and almost obtained the world. They burnt the forest and polluted water and the sky. They were very tyrannical. It is almost the day when the world is ruined. And they pointed the blade to us who did not have hostility. We who did not have great power only merely waited for extinction. But We understood that we could take over their body when we were in the body of the human from trifling chance once. Slimes counterattack began."