If my memory is correct, we talk about this time as ~THE DEVIL'S HOUR~ or something like that. It seems that all the artifacts that require a dubious ritual to work have a better chance of working at this time. It is also the most convenient time to summon demons, it seems.
Logically, it would not be surprising to meet a demonic creature at this time, like a vampire for example. It would therefore be wise to sleep with a vial of holy water or, you know ...
*gunshot *
... a revolver.
"Aaaaaahhh !!! My ... My glasses !!! What have you done ?! Don't you know they cost a fortune ?!"
"If they are so expensive, why don't you stop coming?! Do you enjoy getting shot?!" I said, getting up from my bed.
I pressed the switch to see more clearly this girl with a long black braid who was bleeding on the floor of my room.