Sure, here's an example of unique content optimized for the keyword 'frisk x chara' using synonyms:
1. The main character with the fallen human
2. The hero x the lost soul
3. The explorer with Chara
4. The fearless soul with the troubled spirit
5. The challenger
and the wanderer
Remember, you can create an infinite number of combinations using
different synonyms and variations, but make sure to maintain readability and coherence.