Isekai Creepy Pharmacist

[This is a world steeped in mystique.] [Vampires, werewolves, technology, elixirs, ghosts, bioengineered beings, divination, and puppets; every terrifying element you could conceive of, existed in this world.] [One must carry a lantern when stepping outside.] [One must not wander far.] [Ten meters beyond the gates, the darkness would consume you.] [Whether attending to humans, ghosts, or stitched monsters, one must maintain composure.] [Should you lose your composure, malicious intent would arise.]