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