Sure, here's an example of unique content optimized for the keyword 'frisk x chara' using synonyms:
1. Frisk with the fallen human
2. Frisk with the lost soul
3. Frisk with Chara
4. The courageous one with Chara
5. The daring individual and Chara
Remember, you can create an infinite number
of combinations using different synonyms and variations, but make sure to maintain readability and coherence.