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