Asked about on Discord. My response was:
- Episode topics are fair game for that episode, and any previous ones of the same series - don’t spoil Higurashi EP8 in Umineko EP1, even though they were released after each other.
- Series topics should make liberal use of spoiler tags, to make them readable to anyone with a merely passing familiarity with the series.
- Character topics are fair game for their entire series.
- Other topics should note specifically in the first post what the spoiler policy is. In the absence of one, assume no spoilers for anything.
What I don’t know is what to do about characters whose existence is a spoiler.
Kazamatsuri only has Ushio to deal with here (you do not mention her last name outside of spoiler-sanctioned threads, or the mods will glare at you), but apparently Umineko has a lot more characters like this.
What do we do about these? Any opinions on the list?