I think the op meant signs that a character is going to die rather than just giving the character. In which case I can’t think of any general specific ones, since I usually just go by the “tone” of the anime.
Whenever things are going really well.
Rem, I feel like she's going to sacrifice herself to save Subaru.
This can be considered spoilers but:
Huang (Kuro no Keiyakusha)
Kirigiri Kyoko (Danganronpa: Future Arc)
Archer (Fate/Stay Night: UBW)
Shiina Mayuri (Steins;Gate (every time the watch stopped we knew what would happen))
That part in bloody stream where it transitions from a bloody bubble to Joseph putting on Caesar’s headband and crying out. Couldn’t get more obvious
@Fatboyslim2005 but Shiina didn't actually die
If she didn’t die most of the anime would’ve been pointless.
When they suddenly start getting a lot of character development and then an episode is named after them
Lots of characters died in STEINS;GATE.
What do you think?