Speaking as someone who hasn't read the books the show is perfectly watchable without knowledge of the books
Though I think it starts a bit slow and it probably feels less that way if you've read the books-- mostly cause I'm pretty sure people get the "ah I remember this" feeling to help them get more out of the first few episodes and get more attached to the slew of characters they lump on you.
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No problem!
This is a cute and pop genocide of love!