I recommend the novel " One Punch of Demonic Beasts " to you. It's an urban supernatural novel. It tells the story of the protagonist who suddenly becomes a demonic beast and possesses absolute invincible strength when the world has changed drastically and demonic beasts run amok. In this novel, a large number of demon beasts appeared, and there was also a plot where the protagonist summoned demon beasts. I hope you like this novel. Thank you.