It does seem rather polite and considerate for a hostage taker. You rarely see that these days.
If Death does have another name, the only person around who remembers it is Life, and vice versa.
I think you may be right. We know death has undead but other than those its all humans. This looks more demon than undead, though really walks the line.
I have feeling its pen pen steping in. lol
I was also thinking the same thing before I checked down here- with the additional detail of the green-energy eyes of the “demon”, which iirc is Penpen’s energy color
I know this is fairly unlikely, but it just occurred to me this might not be from death. It might be a demon sent by Penpen(Can’t come himself. But he’s king so maybe he could order someone else to help.) Maybe Lia got the note and contacted him. not very likely, just an outside possibility.
Kinda thinking the demon realm might be the only safe place from Death. (Does she even have another name?)