It's definitely a drama rather than a comedy, but it never feels like it's taking itself too seriously! In particular, there's a lot of humour in the constant undercurrent of workplace satire.

The worksonas retain general knowledge, but all personal memories are gone. They're aware of what the sky is, but they don't remember the experience of seeing it; they can answer the question 'name any US state,' but not 'which US state were you born in?'