Japan, Tokyo. Monsters plagued the city. Kazuki Yukihara became an investigator, shouldering the responsibility of cleaning up monsters and maintaining social stability. In the process of eliminating monsters, he gained the ability to absorb monster beads and make cards. Hell III The head dog, the human face tree, the rain girl, the snow girl... Until one day, Kazuki Yukihara found behind him and formed an army of monsters. But the world is not as simple as imagined, the investigators are divided, and the monster world is in chaos , a shadow hiding in the dark, a big invisible hand stirring up the situation... PS: This book is also called 'I Can Become Strong Without Practice'