Trainer of Mountains and Seas: Start with Devouring

The war between humans and alien beasts continues from ancient times to the cyber future. For thousands of years, alien beasts have been entrenched in the wilderness, and humans have stayed within the walls of Kyushu. He traveled to this world and joined the alien beast training company known as "The Last Barrier of Humanity". Article 1 of the Employee Code: When dealing with strange beasts, admonishment and persuasion should be given priority, education should be supplemented, and wanton killing is strictly prohibited. Others rely on prosthetics to strengthen them, electromagnetic dust whisks, talisman Gatling... In addition to using these, he also has a simpler and cruder way - to devour it directly. "I trained to the limit and accidentally sent it to the police. Why is it not considered training?" "Swallowing it into your stomach for purification is the highest level of transformation guidance!" Until one day, he discovered that the ones he wanted to "teach" were far more than just strange beasts.