Beast Control Begins with the Contract with Shaula

[Re0 world, beast-controlling world, plot distribution is 50/50] [fusion of two worlds] Several years ago, humans had the ability to control beasts. After everyone reaches adulthood, they must go to the "secret realm" to contract their own beast. And Yang Ning, who has always been ordinary, traveled from the earth to this world of beast control. When he entered the "secret realm" as a beast-controlling high school student. He was surprised to find that this "secret realm" turned out to be the world of re0! See Yang Ning's contract as a beast master: Shaula, the scorpion monster. Rem, a ghost girl. Artificial elf Beatrice. Half-elf Emilia. … When there were more and more "master beasts" in the contract, he turned around and looked. The world of beast control has begun to merge with the world of re0!