After failing to protect Lady Succubus from invading warriors, a lowly skeleton soldier unexpectedly regresses twenty years into the past. Determined to alter fate, this weak undead warrior begins a grueling journey to gain the necessary strength.

Awakening twenty years in the past, a lowly skeleton soldier retains memories of its master's demise. Despite its weak initial state, the undead fighter utilizes a mysterious system to level up and acquire new skills through repeated lives.

To prevent the fall of the dungeon and save Lady Succubus, the soldier must navigate political intrigue and powerful enemies. This dark fantasy tale follows an underdog rewriting fate through persistence and strategy.

A weak undead warrior travels 20 years back in time to save Lady Succubus. Read The Skeleton Soldier Failed to Defend the Dungeon manga.

The Skeleton Soldier Failed to Defend the Dungeon, Skeleton Soldier, Lady Succubus, Regression, Dark Fantasy, RPG System, Undead Protagonist, Action, Adventure, Read manga online