雑魚は裏ボスを夢に見る～最弱を宿命づけられたダンジョン探索者《シーカー》、二十五年の時を経て覚醒す～ (Associated Names)

When the protagonist, Last, was six years old, he was attacked by a monster and saved by Riffel, a top-ranked explorer. This encounter inspired Last to aspire to become an explorer himself, and he went to the dungeon city where Riffel resided to receive a role (roll) from the gods. However, the role he was…