I am summoning a monster army in Tokyo

Japan, Tokyo.
Monsters plague the city.
Kazuki Yukihara became a search officer, 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's Three-Headed Dog, Human Face Tree, Rain Girl, Snow Girl...
Until one day, Yukihara Kazuki discovered that a monster army had formed behind him.
And the world is not as simple as imagined. The investigators are divided, the monster world is in chaos, the shadows hiding in the dark, an invisible big hand, stirring the situation...
PS: This book is also known as "I Can Become Stronger Without Cultivation"

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