Demon Sage Deep Profundity
Demon Sage Deep Profundity is a demon sage who infiltrates the human world at fourth Firmament, recovers to the fifth, and opens a route into the World Gap. His success nearly enables a large demon force to map connection points until King True Martial sacrifices his remaining lifespan and Essence Soul to kill him through karma. (Chapters 352–508)
Biography
From hidden recovery to the World Gap
Deep Profundity joins the concealed demon-sage group with his friend Demon Sage Fire Dragon. He dismisses human resistance as irrational, yet later questions the Imperial Lords' willingness to abandon hundreds of thousands of demon monarchs. After years of delay, the two reach the fifth Firmament limit, receive a Tribulation treasure, drink a final jar together, and attack the world membrane at widely separated seas. (Chapters 352–459)
Li Guan intercepts and kills Fire Dragon, but Deep Profundity cuts through both membranes and enters the World Gap. A demon team hides him in a small grotto-heaven while using a decoy to continue mapping. King True Martial uses a Fate Strawman and expends his own life to attack through karma, destroying Deep Profundity's Essence Soul without damaging the body. Reports and the recovered corpse confirm the death. (Chapters 460–508)
Appearance and personality
The corpus does not provide a detailed physical description beyond his saber-bearing demon form. He is contemptuous of human sacrifice, wary of the Imperial Lords, loyal enough to share a final drink with Fire Dragon, and frightened into haste when that friend dies. Broader motives before the invasion are not stated. (Chapters 352–460)
Abilities and cultivation
Deep Profundity uses a black saber with enough force to cleave open the human world's membrane and the second boundary into the World Gap. At fifth Firmament limit, he can operate a supplied Tribulation treasure and survive the crossing. Physical concealment in a grotto-heaven does not isolate karma, allowing King True Martial's sacrificial technique to bypass the body and annihilate his Essence Soul. (Chapters 459–508)
Relationships
- Demon Sage Fire Dragon: His friend and partner in the simultaneous membrane attack.
- Demon Sage Nine Abyss: A fellow human-world demon-sage commander who receives Deep Profundity after infiltration.
- Patriarch Yellow Oscillate: A fellow demon sage present during the hidden planning phase.
Items
No distinct qualifying personal item is associated with Demon Sage Deep Profundity in the item manifest. The Tribulation treasure mentioned in his mission is supplied operational equipment rather than a cataloged personal possession.