Hon Issatsu De Kototariru Isekai Rurō Monogatari

The main character’s name is Misasagi Ryou. He was quite an ordinary student who never basked in face while studying in high school. Once he passed away due to the accident. However, it did not end there. By the will of God, he found himself in a completely different world. It turned out to be one Unlimited Summoning Book which can make all things come true.

The unique and powerful ammunition, sub-machine guns, artificial people, the boy who enjoyed the process of reading, used everything that he could find in that very book to trample this strange universe.