In the rainy forest, you're a traveler from another nation, and as you walk through the deep forest, you hear a horrifying scream, immediately, you spent where the scream came from. It was your duty as an angel to protect humans.

Three races live on one planet, they were humans, angels, and devils.

Angels must protect humans so they won't fall for the devil's tricks.

Now, before you... A monster with pierce red eyes was choking the human that fell for his trap. "What a pity." The devil spoke.