Kill Me Baby: Butsuzou Kegatte Nise Halloween

Witches, vampires, demons, and magical girls… what more could you ask for?

Anime full of Halloween spirit and spooky vibes.

Requirements for inclusion:
1. Halloween themes/tropes.
2. Western Halloween/horror tropes/characters.
3. Horror and/or action anime that give me a "Halloween" vibe (such as featuring vampires, werewolves, and so on).
4. Halloween inspired aesthetic.
5. Anime that give me "October" vibes.

What's not included:
1. Anime with witches that isn't spooky inspired setting (eg: Majo no Tabitabi).
2. Horror anime that doesn't feel distinctly "Halloween" enough.

Details:
1. Only anime that I have watched myself are included.
2. One entry per series (usually the first season will be listed).

Include movies and OVA's. Goes from 2007-2015. Does not include recaps or small specials. Is chronologically ordered.
Edit 28-11-2023: added Hidamari Sketch specials as they are full-length episodes.
Edit 06-04-2024: added Aldnoah.Zero (both parts) as it was published in Manga Time Kirara Forward.

Here also the link for 2016-2025 Manga Time Kirara adaptations: https://myanimelist.net/stacks/35142