Yep, it’s in settings under the filter and blocks section. Just tried it myself. Make sure to use the same apostrophe as they do in their titles, I just copy pasted a title up to the work part. Or you could add a filter for the comic website.
I’ve been noticing the filtered keywords will reset occasionally. Not sure if it’s just a random thing occurring or if it’s whenever there’s a new TestFlight build pushed. I’m on iOS 17.2 public beta.