Goblin Slayer Side Story II: Dai Katana, Vol. 2 (manga) — Kumo Kagyu

Six adventurers, brought together by chance, now descent into the Dungeon of the Dead as a party for the very first time. In this strange place, unbound by natural law and inimical to human life, the slightest mistake can mean death for them all. They will have to cover for one another's weaknesses and tap hidden strengths to survive this expedition, but their fates ultimately depend on the capricious rolls of the dice...