[Cool story + no heroine + invincible + dungeon flow]

Change to become a summoner of the dead, and the skills can be upgraded once per second, and there is no upper limit for permanent upgrades.

[Small Skeleton Summoning] – [Big Skeleton Summoning] – [Elite Skeleton Summoning] – [Epic Skeleton Summoning]

[Desperate Skeleton Summoning]

[Scary Skeleton Summoning]

…

After N upgrades

[Skeleton Summoning to Welcome the Return of the Great Skeleton King]

In addition, there are [Hellfire Summoning] [Hellhound Summoning] [Bone Dragon Summoning] [Ghost Summoning]…

Skills are upgraded once per second, how do you deal with it?

【Artificial Apocalypse】+【War】+【Morally Ambiguous】+【Infection】+【Villain-Style Protagonist】+【Zombie Horde Evolution】+【No Pretending to Be Weak】+【Decisive Killing】+【Non-Human】【Infection-Based Power】

He dives into the battlefield, spreading infection madly, endlessly evolving everyone he infects. A tide of billions of corpses crushes all races underfoot—until all beings submit, and even the gods dare not challenge him.

From the moment I awakened, the era of the Zombie Lord had silently begun...