Monster 8: 30 Days to the End of the World

In 2124, after the outbreak of the world war, there was no such thing as a country in the world. Human beings inadvertently opened wormholes from different dimensions, and various types of monsters appeared all over the world. Xia Ren is an 18-year-old boy from 2024. He traveled here and became an employee of a monster cleaning company. Because there was no system, he had to destroy it. After accidentally swallowing a small monster, he gained the ability to transform into a monster and became the most powerful enemy of mankind so far: a level 9.8 Monster, and was defined as [Monster No. 8] By the United Earth Defense Force. "There are 30 days left until the end of the world." Every day he wakes up to the sound of a countdown. But now it is a terrifying period when the world is attacked by monsters. So what will be the end in 30 days? Xia Ren discovered that swallowing the monster crystal core can give his human body the ability of the monster. In order to cope with the coming of the doomsday and to protect his friends and family, he had to obtain more crystal nuclei, so Xia Ren decided to join the United Earth Defense Force and become a frontline warrior against monsters.