Sure, here's an example of unique content optimized for the keyword 'frisk x chara' using synonyms:
1. Frisk and Chara
2. Frisk with Chara
3. Frisk with Chara
4. Frisk with the troubled spirit
5. The daring individual
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.