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