Shadow Saga

is a Japanese light novel series written by Nishimura Sei, with illustrations by Parsley. The series began publication on September 10, 2019 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
In "Great Britain, another world", the light of life of the great mage Merlin was extinguishing. Realizing the end, he gives his disciple Lina an old prophecy written in a foreign language. The title of the book is "Arthurian romance". There are some differences, but the prophecy, which describes what actually happened, spelled out the death of Lina's friend Arthur.

On the other hand, a Japanese high school student / visitor who loves the story of King Arthur was in the sacred place of England on a school trip. Always wondering, "Isn't there a story of King Arthur that isn't a tragedy?" I returned to the inn and started reading immediately, but suddenly it moved into the forest —— !?