Ah, I see from your new screenshot what’s probably happening.
There are several buffers you don’t normally see that the celshader uses that are pre-tonemapping/lighting. The “flatten” attribute is one of these. You’ll want to set flatten to zero if you have it on as it blends the lit scene back to an unlit one. Try these settings:
Flatten amount: 0.0
Near brightness: 1.0
Far brightness: 1.0
You can also use the near/far power to introduce a black fog over distant objects, which may help with how the scene feels. Keep in mind as well that the brightness won’t light unlit areas - it’s just a modifier of what’s already rendered.
Here’s what I was able to do with the Anime preset modified to use those settings:
You can do some fun things with the colour grading as well:
