Goblin Slayer Gaiden 2: Tsubanari no Tachi

Not so very long ago, the Death began stalking the continent. The King of Time issued a proclamation: "Find the source of this Death and seal it away." The source: the Dungeon of the Dead. A fortress city that arose at the mouth of the dungeon serves adventurers who seek companions, challenge the dungeon, battle, find loot... and sometimes die. You are an adventurer who has come to the fortress city in hopes of reaching the dungeon's lower- most depths-but can you and your party conquer the untold evils that lurk beneath the surface? (Source: Yen Press)

Goblin Slayer Gaiden 2: Tsubanari no Daikatana is a spin-off series of the main Goblin Slayer! light novel. This is the second manga adaptation of the light novel. Set 10 years prior to the original series, the story centers around Sword Maiden's party of six adventurers on their journey to the Dungeon of the Dead to kill the Demon Lord.