crystal's kpop gg biases but the groups aren't that obvious

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Across
  1. 2. both monochromatic and chromatic at the same time
  2. 3. to one was eight
  3. 4. walks out the door and leaves
  4. 10. certainty level: impossible
  5. 13. its shine is never fading
  6. 14. eye, oh eye!
  7. 16. you don't have
  8. 17. this is very contradictory unless you have a rather interesting child
  9. 18. cause of death
  10. 19. daddabaa
Down
  1. 1. avatar the movie except the members aren't blue
  2. 5. boy, i'm not a doll
  3. 6. cupcake flavour
  4. 7. vintage laughing emoji before the days of emoji
  5. 8. eilish
  6. 9. a literal anagram...i'm not joking
  7. 11. on sale for $39.99
  8. 12. incy wincy spider
  9. 14. absolute lunatics
  10. 15. old unreleased music from decades ago