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