Goblin Slayer: Side Story Year One

Goblin Slayer (Japanese: ゴブリンスレイヤー Hepburn: Goburin Sureiyā) is a Japanese dark fantasy light novel series written by Kumo Kagyu and illustrated by Noboru Kannatsuki.

Prequel series revealing Goblin Slayer’s past and the events which led him to become an adventurer with the one and only purpose of annihilating all goblins from the world.

Goblin Slayer Synopsis: After his sister is brutally murdered during a goblin raid, a young boy swears vengeance upon the creatures who killed her and the rest of his village. Five years later and now a novice adventurer, he is by chance reunited with his childhood friend, another survivor of the massacre.

Despite his inexperience, crude battle gear, and low rank, the boy sets off alone on a mission to defeat a lair of goblins–thus begins the origin story of how he came to be known as Goblin Slayer!
-Yen Press