Preparing a Feast, The Arrival of the Beings from the Fourth Dimension

The fourth dimension was full of oddly-shaped broken mountain walls, making it a desolate place. A group of demons, some with wings and some with scales, were standing on top of the mountain cliff. They were all staring at the pitch-black portal above them. Below them were a group of weak humans and small animals with faces filled with fear and despair. 

Suddenly, a giant tail swept across the group of humans and animals, flicked them up to the portal with dazzling mana, causing the poor victims to immediately explode once they came into contact with the portal. The fresh blood blanketed the sky and swirled around the portal which was expanding at a rate visible to the naked eye. 

"My King, it's working! The universe of the law in space is trembling. There's no doubt that this is a portal," said a demon excitedly.