I Awakened the WORST F-Rank Summon, But My Army Destroyed the Gods.

What the story is about

After awakening what everyone believes is a useless F-rank necromancer class, Li Ang discovers that his true talent, Calamity Sovereign, grants him access to dangerous worlds full of monsters and corpses. He builds an undead legion, grows stronger by conquering these worlds, and prepares to face the threats surrounding the Lords of Blue Star.