So, when it comes tone in a story, one that tries to merge two different tones (and sometimes genres comes into this too) do you prefer a blend or a slide?
Blend: a story that mixes the two tones throughout the story pretty evenly but can lead to mood whiplash if to moves too far to one end of the other too quickly. Think dark story suddenly puts in chibis or comedy scenes. Or cute story suddenly murders a bunch of people. Often swings back and forth, can be more extreme or more mild.
Slide: a story that slowly moves from one two to the other in a slow, generally one way descent but can lead to sliding too far. A story starts cute and slowly moves into something darker in small steps. Or a dark story slowly becomes more light hearted.
Now, obviously, a lot of stories mix and shift tones in someway but more extremes are a bit trickier as a writer and a reader. I'm sure we've all read/watched series that suddenly shift and lots of people are dead without warning and the next episode is jokes again. And I'm sure we've seen series that slowly move to a point where you don't really notice until someone's dead and you realise this was a slice of life comedy when we started. (Yes, these are extreme, I know) Both a very common in things like shounen and magical girl anime, sometimes both at once.
So, which do you prefer as a reader? Is it different to as a writer? Do you like a mix of extreme tones spread pretty consistently across the series or a slow shift that can be almost unnoticeable until you look back?
And, just on the side, what about art? If the art shift purposefully (not just art evolution), what's your opinion on that? The most common example is sudden chibis but other examples can be the art slowly shifting as the tone does, cute style slowly grows more mature as the tone darkens, or reverse. Or, semi-common in magical girls/shounen battle anime, the shift when it comes to fight/post transformations. Madoka Magica's witch labyrinths are a pretty well known example.