Sure, here's an example of unique content optimized for the keyword 'frisk x chara' using synonyms:
1. Frisk x Chara
2. Frisk x the lost soul
3. Frisk and Chara
4. The fearless soul with Chara
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.