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