A Demon Guide Collector from the Steam Age

Behind the world, a curtain exists that ordinary people cannot see.

Beyond that curtain lie old gods, blasphemous whispers, absurd dreams, insane knowledge, and devouring demons.

Leon transmigrates to another world where steam and mystery coexist, and immediately after arriving he encounters a supernatural incident.

Fortunately, he possesses a demon illustrated handbook from subspace.

Stare directly at pollution and record demons; analyze weaknesses and obtain rewards; complete the illustrated handbook to unlock spirituality, experience, and supernatural paths.

[Complete the first kill of the Skin-Stealing Demon, Mystery Knowledge +1, illustrated handbook collection complete, reward: Spiritual Energy +1, Skill Experience +500]

[Skin-Stealing Demon illustrated handbook unlocked more information; the next level of the handbook requires killing 10 Skin-Stealing Demons]

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[Complete the first kill of the Dagonite, Mystery Knowledge +1, illustrated handbook collection complete, reward: Spiritual Energy +1, obtain underwater breathing ability]

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[After killing 100 ghouls in total, obtain the title "Grave Digger"]

[Title effect 1 (Rot Resistance): You gain significant resistance to pollution and sanity erosion from supernatural demons with undead attributes.]

[Title effect 2 (Dead Man's Scent): You can sense traces of supernatural demons with undead attributes within a certain range. The closer they are, the clearer the perception.]

[Title effect 3 (Nemesis of the Dead): Damage dealt to all supernatural demons with undead attributes increases by 10%.]

When the ancient rulers try to drag the world into the abyss, he will use steam, firearms, knowledge, and his illustrated handbook to hunt demons, dissect mystery, and write his own legend in an age of madness.