Grimgar of Fantasy and Ash, volume 1

Grimgar of Fantasy and Ash (灰と幻想のグリムガル, Hai to Gensō no Gurimugaru) is a Japanese light novel series written by Ao Jūmonji and illustrated by Eiri Shirai. The story follows a group of people who suddenly find themselves in a fantasy world with no memories from before their arrival, and chronicles their struggles to survive and make a life for themselves as volunteer soldiers.