The First 15 Mintues of Ambition of the Slimes (Vita)

Copied from PSM Grave:The world is now on the verge of extinction... A vicious race of demons known as "Humans" has emerged from nowhere and has almost taken over the world. Burning the forests, polluting the water and the skies, their rampant violence was unacceptable. The day is not far off when they will destroy our world...And even those of us who have no hostile intent have turned our blades against them. We, who are not much of a fighter, just waited for them to destroy us. But one day, by a small chance, we discovered that we could enter the bodies of humans and take over their bodies.The slimes have begun their counterattack.

http://www.nicovideo.jp/watch/sm41685605