Group A:

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Across
  1. 6. Revealed through characters' romantic relationships
  2. 7. Dilemma Revealed when characters are faced with challenging ethical decisions
  3. 11. Revealed as characters grapple with questions about who they are
  4. 13. Explored in stories where characters confront life-threatening situations
  5. 14. Revealed through characters who experience loneliness
  6. 15. Revealed as characters seek fairness and moral rectitude
  7. 17. Revealed as characters seek vengeance for perceived wrongs
Down
  1. 1. of Age Explored as characters grow and mature
  2. 2. Explored as characters maintain optimism in challenging circumstances
  3. 3. Here's the list of themes with a space between the word and the clue:
  4. 4. Revealed through the tensions and clashes between characters
  5. 5. Explored through the development of strong bonds
  6. 8. and Grief Explored as characters cope with the death of loved ones
  7. 9. Explored as characters strive to break free from oppression
  8. 10. Explored as characters pursue their goals and aspirations
  9. 12. and Corruption Explored as characters grapple with the abuse of power
  10. 16. Revealed when characters experience the breaking of trust