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. Frisk and the lost soul
3. The explorer with Chara
4. The courageous one
with Chara
5. The daring individual with the wanderer
Remember, you can create an infinite number of combinations using different synonyms and variations, but make sure
to maintain readability and coherence.