Let me improve, Japanese Names info
不三
玖伊那
- Kuina -
Beauty
^口
玖
means "nine."
1. A beautiful black stone.
2. A character used for nine(f) in documents such as contracts to prevent rewriting.
Kuina’s death was faked. She was initially recruited as a potential candidate for God’s knights as a highly-skilled child swordsman. They took her and either paid off her family to buy her, which will play into her sad story reunion with Zoro, or put a fake body using some power. Notably, it is a character that can be “used to replace” the number nine, which might indicate she is a replacement for the previous 9 or foreshadow her being replaced by the fake dead body.
“Nine” would make sense for her place in the Knights order as the ninth recruited or ninth most powerful.